I'm proud to finally release the first new major version of Python.NET in 7 years.

This is the culmination of over 2 years of work from many contributors to modernise the code base and support modern .NET and Python versions.

Highlights

• Support for Python 3.9 and 3.10
• Support for .NET 6
• Codec system to control conversions between .NET and Python objects
• Single assembly for all Python versions and operation systems (and thus also just a single wheel)
• Significantly simplified the build system, only requires a modern .NET SDK to build the Python package

The new package is available from PyPI and Nuget, respectively. Updated documentation is available here:

https://pythonnet.github.io/pythonnet/

In particular, there is an updated Getting Started section that documents using .NET 6 (coreclr) from Python:

https://pythonnet.github.io/pythonnet/python.html#getting-started

While we tried to keep this release as backwards-compatible as possible, there are still some breaking changes. The changelog is available here:

https://github.com/pythonnet/pythonnet/blob/master/CHANGELOG.md#300---2022-09-29

What's Changed

• Increase ob's ref count in tp_repr to avoid accidental free by @DanBarzilian in Increase ob's ref count in tp_repr to avoid accidental free #1160
• fixed crash due to a decref of a borrowed reference in params array handling by @lostmsu in fixed crash due to a decref of a borrowed reference in params array handling #1163
• Drop Python 2 support by @filmor in Drop Python 2 support #1158
• remove remoting block for .NET standard by @koubaa in remove remoting block for .NET standard #1170
• Pybuffer by @koubaa in Pybuffer #1195
• Fix appveyor would only test the PyPI package by @amos402 in Fix appveyor would only test the PyPI package #1200
• Remove unnecessary CheckExceptionOccurred calls by @amos402 in Remove unnecessary CheckExceptionOccurred calls #1175
• Provide more info about failuers to load CLR assemblies by @lostmsu in Provide more info about failuers to load CLR assemblies #1076
• Add syntax highlighting to Python code examples in README.rst [docs] by @SFM61319 in Add syntax highlighting to Python code examples in README.rst [docs] #1208
• Remove non-existent PInvoke functions by @amos402 in Remove non-existent PInvoke functions #1205
• Bad params object[] precedence (master) by @lostmsu in Bad params object[] precedence (master) #1224
• drop 3.4 and 3.5 by @koubaa in drop 3.4 and 3.5 #1227
• really remove old versions by @koubaa in really remove old versions #1230
• Added a test for finalization on shutdown by @lostmsu in Added a test for finalization on shutdown #1206
• fix compiler warning by @koubaa in fix compiler warning #1226
• Ensure only implementers of IEnumerable or IEnumerator are considered Iterable by @danabr in Ensure only implementers of IEnumerable or IEnumerator are considered Iterable #1241
• Select correct method to invoke when keyword arguments are used by @danabr in Select correct method to invoke when keyword arguments are used #1242
• Wrap returned objects in interface if method return type is interface by @danabr in Wrap returned objects in interface if method return type is interface #1240
• Non-delegate types should not be callable by @alxnull in Non-delegate types should not be callable #1247
• Make indexers work for interface objects by @danabr in Make indexers work for interface objects #1246
• Make it possible to use inherited indexers by @danabr in Make it possible to use inherited indexers #1248
• Add soft shutdown by @amos402 in Add soft shutdown #958
• Fixed dllLocal not being initialized. by @benoithudson in Fixed dllLocal not being initialized. #1252
• Return interface objects when iterating over interface collections by @danabr in Return interface objects when iterating over interface collections #1257
• Make len work for ICollection<> interface objects by @danabr in Make len work for ICollection<> interface objects  #1253
• Enable Source Link and symbol package generation during build by @lostmsu in Enable Source Link and symbol package generation during build #1259
• Fixed polyfill for TypeBuilder.CreateType by @lostmsu in Fixed polyfill for TypeBuilder.CreateType #1261
• fix wrongly cased Microsoft.CSHARP.Targets by @vivainio in fix wrongly cased Microsoft.CSHARP.Targets #1271
• Intern string by @amos402 in Intern string #1254
• Use .NET Core 3.1 LTS for tests (instead of 2.0) by @lostmsu in Use .NET Core 3.1 LTS for tests (instead of 2.0) #1279
• Python 3.9 by @filmor in Python 3.9 #1264
• Remove deprecated implicit assembly loading by @lostmsu in Remove deprecated implicit assembly loading #1277
• Ensure methods of Object are also available on interface objects by @danabr in Ensure methods of Object are also available on interface objects #1284
• Fix kwarg func resolution by @jmlidbetter in Fix kwarg func resolution #1136
• Allow creating new .NET arrays from Python using Array[T](dim1, dim2,…) syntax by @lostmsu in Allow creating new .NET arrays from Python using Array[T](dim1, dim2,…) syntax #1291
• Detect the size of wchar_t (aka Runtime.UCS) at runtime using PyUnicode_GetMax by @lostmsu in Detect the size of wchar_t (aka Runtime.UCS) at runtime using PyUnicode_GetMax #1298
• TypeOffset class no longer depends on target Python version by @lostmsu in TypeOffset class no longer depends on target Python version #1292
• [Out] parameters no longer added to return tuple by @lostmsu in [Out] parameters no longer added to return tuple #1308
• Added github actions workflow to replace travis by @lostmsu in Added github actions workflow to replace travis #1307
• Convert projects to SDK style by @filmor in Convert projects to SDK style #1209
• Test other Operating Systems than Linux via Github Actions by @filmor in Test other Operating Systems than Linux via Github Actions #1310
• Ensure that param-array matching works correctly by @filmor in Ensure that param-array matching works correctly #1304
• Remove API warnings as these will be stabilised for 3.0 by @filmor in Remove API warnings as these will be stabilised for 3.0 #1315
• Replace custom platform handling by RuntimeInformation by @filmor in Replace custom platform handling by RuntimeInformation #1314
• Fixed CollectBasicObject test by @lostmsu in Fixed CollectBasicObject test #1313
• Implement inplace building and develop by @filmor in Implement inplace building and develop #1317
• Drop the long-deprecated CLR.* alias by @filmor in Drop the long-deprecated CLR.* alias #1319
• Fix or disable warnings in Python.Runtime by @filmor in Fix or disable warnings in Python.Runtime #1318
• Fixed segfault in ClassDerived.tp_dealloc by @lostmsu in Fixed segfault in ClassDerived.tp_dealloc #1330
• Fixed crash in finalizer of CLR types defined in Python, that survive engine shutdown by @lostmsu in Fixed crash in finalizer of CLR types defined in Python, that survive engine shutdown #1260
• Test for non-ASCII encoded method name by @filmor in Test for non-ASCII encoded method name #1329
• Fix illegal delegate usage by @BadSingleton in Fix illegal delegate usage #1328
• PyIter: do not force dispose previous object upon moving to the next one by @lostmsu in PyIter: do not force dispose previous object upon moving to the next one #1331
• Incorrectly using a non-generic type with type parameters now produces a helpful Python error instead of throwing NullReferenceException by @tminka in Incorrectly using a non-generic type with type parameters now produces a helpful Python error instead of throwing NullReferenceException #1326
• Call PyErr_NormalizeException for exceptions by @slide in Call PyErr_NormalizeException for exceptions #1265
• TestPythonEngineProperties.SetPythonPath avoids corrupting the module search path for later tests by @tminka in TestPythonEngineProperties.SetPythonPath avoids corrupting the module search path for later tests #1336
• ABI.Initialize gives a helpful message when the TypeOffset interop class is not configured correctly by @tminka in ABI.Initialize gives a helpful message when the TypeOffset interop class is not configured correctly #1340
• Better error messages from PyObject.AsManagedObject and DelegateManager.TrueDispatch by @tminka in Better error messages from PyObject.AsManagedObject and DelegateManager.TrueDispatch #1344
• Python tests can now be debugged by running them as embedded tests within NUnit by @tminka in Python tests can now be debugged by running them as embedded tests within NUnit #1341
• Operator overloads support by @christabella in Operator overloads support #1324
• Domain reload test cases fixes by @BadSingleton in Domain reload test cases fixes #1287
• Add more more tests for in, out and ref parameters by @BadSingleton in Add more more tests for in, out and ref parameters #1349
• Support comparison operators by @christabella in Support comparison operators #1347
• Disable implicit conversion from PyFloat to .NET integer types by @lostmsu in Disable implicit conversion from PyFloat to .NET integer types #1343
• Add GetPythonThreadID and Interrupt methods in PythonEngine by @gpetrou in Add GetPythonThreadID and Interrupt methods in PythonEngine #1337
• Disable implicit conversion from PyFloat to uint64 by @tminka in Disable implicit conversion from PyFloat to uint64 #1362
• Disable implicit conversion from float to array index by @tminka in Disable implicit conversion from float to array index #1363
• Better error messages for method argument mismatch and others by @tminka in Better error messages for method argument mismatch and others #1361
• Support ByRef arguments in event handlers by @tminka in Support ByRef arguments in event handlers #1364
• Build single Python.Runtime.dll for all platforms by @lostmsu in Build single Python.Runtime.dll for all platforms #1365
• Fix exception string by @filmor in Fix exception string #1360
• ParameterInfo.Name needs to be checked for null before usage by @filmor in ParameterInfo.Name needs to be checked for null before usage #1375
• Monthly NuGet release previews by @lostmsu in Monthly NuGet release previews #1381
• Sign Runtime DLL with a strong name by @gpetrou in Sign Runtime DLL with a strong name #1382
• New loading based on clr_loader by @filmor in New loading based on clr_loader #1373
• Simplify PyScope by delegating ownership to PyObject instance by @lostmsu in Simplify PyScope by delegating ownership to PyObject instance #1367
• implement list codec by @koubaa in implement list codec #1084
• Ensure interned strings can not be referenced after InternString.Shutdown by @lostmsu in Ensure interned strings can not be referenced after InternString.Shutdown #1394
• Made InterruptTest more robust by @lostmsu in Made InterruptTest more robust #1393
• Adjust static libpython detection by @filmor in Adjust static libpython detection #1396
• Remove Utf8Marshaler, set PyScope base class to PyObject, added PyModule by @lostmsu in Remove Utf8Marshaler, set PyScope base class to PyObject, added PyModule #1391
• ImportHook cleanup + PyObject.Length exception by @lostmsu in ImportHook cleanup + PyObject.Length exception #1400
• Suggest to set Runtime.PythonDLL when embedding in .NET by @lostmsu in Suggest to set Runtime.PythonDLL when embedding in .NET #1411
• Allow GIL state debugging; require GILState to be properly disposed by @lostmsu in Allow GIL state debugging; require GILState to be properly disposed #1397
• Try libdl.so.2 on Linux before libdl.so by @lostmsu in Try libdl.so.2 on Linux before libdl.so #1425
• PyType class, wrapper for Python types by @lostmsu in PyType class, wrapper for Python types #1395
• Reworked Enum marshaling by @lostmsu in Reworked Enum marshaling #1392
• Prevent stack overflow when an encoder is registered from Python by @lostmsu in Prevent stack overflow when an encoder is registered from Python #1429
• Do not call find_libpython during import clr as Python.Runtime can find it on its own by @lostmsu in Do not call find_libpython during import clr as Python.Runtime can find it on its own #1440
• Fixed __cause__ on overload bind failure and array conversion by @lostmsu in Fixed __cause__ on overload bind failure and array conversion #1442
• Replace magic offsets with proper offset calculation by @lostmsu in Replace magic offsets with proper offset calculation #1441
• Detect Py_TRACE_REFS at runtime and calculate object offsets accordingly by @lostmsu in Detect Py_TRACE_REFS at runtime and calculate object offsets accordingly #1426
• Re-enable the domain reload tests by @BadSingleton in Re-enable the domain reload tests #1404
• Dispose all temporary objects in PyCheck_Iter_PyObject_IsIterable_ThreadingLock_Test by @lostmsu in Dispose all temporary objects in PyCheck_Iter_PyObject_IsIterable_ThreadingLock_Test #1456
• Use PyType instances instead of raw pointers by @lostmsu in Use PyType instances instead of raw pointers #1431
• Refactoring of tp_dealloc by @lostmsu in Refactoring of tp_dealloc #1459
• Refactoring of tp_clear by @lostmsu in Refactoring of tp_clear #1460
• Handle ProcessExit event by @lostmsu in Handle ProcessExit event #1458
• Improve Python <-> .NET exception integration by @lostmsu in Improve Python <-> .NET exception integration #1134
• Add a failing test for Unicode conversion by @pkese in Add a failing test for Unicode conversion #1467
• Modernize import hook by @BadSingleton in Modernize import hook #1369
• Fixed crash in ToArray when sequence explicitly denies len by @lostmsu in Fixed crash in ToArray when sequence explicitly denies __len__ #1484
• Prevent crash during debugging when attempting to inspect PyObject by @lostmsu in Prevent crash during debugging when attempting to inspect PyObject #1483
• Fixed double call to PyType_Ready in CLR MetaType's tp_new by @lostmsu in Fixed double call to PyType_Ready in CLR MetaType's tp_new #1486
• Create PyIter from existing PyObject by @lostmsu in Create PyIter from existing PyObject #1482
• [WIP] Add ability to create module from C# by @slide in [WIP] Add ability to create module from C# #1447
• Fixed custom decoders not working for DateTime and Decimal by @lostmsu in Fixed custom decoders not working for DateTime and Decimal #1497
• Allow substituting base types for CLR types (as seen from Python) by @lostmsu in Allow substituting base types for CLR types (as seen from Python) #1487
• Property descriptor made visible on the reflected class by @lostmsu in Property descriptor made visible on the reflected class #1512
• Validate, that custom Python base types can be inherited from by @lostmsu in Validate, that custom Python base types can be inherited from #1510
• Names of .NET types changed to better support generic types by @lostmsu in Names of .NET types changed to better support generic types #1509
• Dynamic arithmetic ops raise correct Python exception on failure by @lostmsu in Dynamic arithmetic ops raise correct Python exception on failure #1508
• Py.Import and PyModule.Import return PyObject instead of PyModule by @lostmsu in Py.Import and PyModule.Import return PyObject instead of PyModule #1530
• Remove needsResolution hack by @lostmsu in Remove needsResolution hack #1531
• Implements buffer interface for .NET arrays of primitive types by @lostmsu in Implements buffer interface for .NET arrays of primitive types #1511
• Call tp_clear of base unmanaged type by @lostmsu in Call tp_clear of base unmanaged type #1541
• Allow decoders affect PyObject.As<object>() by @lostmsu in Allow decoders affect PyObject.As<object>() #1546
• Added workaround for warning in threading module after TestInterrupt by @lostmsu in Added workaround for warning in threading module after TestInterrupt #1560
• ClassManager illegally decrefed ClassObject's refcount on shutdown by @lostmsu in ClassManager illegally decrefed ClassObject's refcount on shutdown #1563
• Ensure tests, that need running PythonEngine have similar SetUp and TearDown by @lostmsu in Ensure tests, that need running PythonEngine have similar SetUp and TearDown #1564
• Allow decoding instanceless exceptions by @lostmsu in Allow decoding instanceless exceptions #1544
• Do not clean tpHandle in ClassBase.tp_clear - it might be used in tp_dealloc by @lostmsu in Do not clean tpHandle in ClassBase.tp_clear - it might be used in tp_dealloc #1566
• Mixins for standard collections that implement collections.abc interfaces by @lostmsu in Mixins for standard collections that implement collections.abc interfaces #1543
• Allow Python to overwrite .NET methods by @lostmsu in Allow Python to overwrite .NET methods #1545
• Simplify Dispatcher by @lostmsu in Simplify Dispatcher #1559
• Simplify assembly ResolveHandler, and use official assembly name parsing by @lostmsu in Simplify assembly ResolveHandler, and use official assembly name parsing #1570
• Disable implicit conversions that might lose information by @lostmsu in Disable implicit conversions that might lose information #1568
• Minor fixup for no autoconversions PR by @lostmsu in Minor fixup for no autoconversions PR #1574
• Fixed FileLoadException when trying clr.AddReference('/full/path.dll') by @lostmsu in Fixed FileLoadException when trying clr.AddReference('/full/path.dll') #1573
• Raise BadPythonDllException instead of confusing TypeLoadException when PythonDLL was not configured properly by @lostmsu in Raise BadPythonDllException instead of confusing TypeLoadException when PythonDLL was not configured properly #1577
• Cleaning up public API by @lostmsu in Cleaning up public API #1557
• PyScope/PyModule API cleanup by @lostmsu in PyScope/PyModule API cleanup #1569
• name and signature for .NET methods by @lostmsu in __name__ and __signature__ for .NET methods #1133
• When reflecting nested types, ensure their corresponding PyType is allocated by @lostmsu in When reflecting nested types, ensure their corresponding PyType is allocated #1579
• Safer GetAttr(name, default) by @lostmsu in Safer GetAttr(name, default) #1578
• Expose PyType.Get by @lostmsu in Expose PyType.Get #1581
• Allow user-created instances of PySequence and PyIterable by @lostmsu in Allow user-created instances of PySequence and PyIterable #1580
• Changed signature of IPyObjectDecoder.CanDecode by @lostmsu in Changed signature of IPyObjectDecoder.CanDecode #1583
• Disabled float and bool implicit conversions by @lostmsu in Disabled float and bool implicit conversions #1584
• Remove a deprecated attribute in PropertyObject by @BadSingleton in Remove a deprecated attribute in PropertyObject #1595
• Python 3.10 by @filmor in Python 3.10 #1591
• Make .NET objects that have __call__ method callable from Python by @lostmsu in Make .NET objects that have __call__ method callable from Python #1589
• Fixed recursive dependency in clr module initialization by @lostmsu in Fixed recursive dependency in clr module initialization #1602
• Include README.md into NuGet package by @lostmsu in Include README.md into NuGet package #1599
• Remove unused PythonMethodAttribute by @lostmsu in Remove unused PythonMethodAttribute #1609
• Track Runtime run number by @lostmsu in Track Runtime run number #1074
• Use .NET 6.0 LTS and C# 10 by @lostmsu in Use .NET 6.0 LTS and C# 10 #1620
• Update NonCopyableAnalyzer to latest version with our changes upstreamed by @lostmsu in Update NonCopyableAnalyzer to latest version with our changes upstreamed #1624
• Use new references by @lostmsu in Use new references #1603
• Fixed all warnings except explicit ones by @lostmsu in Fixed all warnings except explicit ones #1635
• Match generic and private methods upon runtime reload by @lostmsu in Match generic and private methods upon runtime reload #1637
• Require newest available clr-loader by @filmor in Require newest available clr-loader #1643
• Fix the PyGILState_STATE type by @filmor in Fix the PyGILState_STATE type #1645
• Fix warning regarding undefined module on GC Offset Base by @filmor in Fix warning regarding undefined __module__ on GC Offset Base #1646
• Removed ShutdownMode. Now always behaves like original Reload by @lostmsu in Removed ShutdownMode. Now always behaves like original Reload #1638
• When process is exiting, there's no need to save live .NET objects by @lostmsu in When process is exiting, there's no need to save live .NET objects #1648
• Moved Py class into its own file by @lostmsu in Moved Py class into its own file #1649
• Added a regression test for calling base method from nested class by @lostmsu in Added a regression test for calling base method from nested class #1652
• Fixed accessing partially overriden properties from Python by @lostmsu in Fixed accessing partially overriden properties from Python #1650
• Reworked the way .NET objects are constructed from Python by @lostmsu in Reworked the way .NET objects are constructed from Python #1651
• Improved support for generic method overloading by @lostmsu in Improved support for generic method overloading #1657
• Use Delegates to access Py_NoSiteFlag by @lostmsu in Use Delegates to access Py_NoSiteFlag #1659
• Provide __int__ instance method on enum types to support int(Enum.Member) by @lostmsu in Provide __int__ instance method on enum types to support int(Enum.Member) #1661
• Cleanup PyBuffer a bit by @lostmsu in Cleanup PyBuffer a bit #1662
• Support for byref parameters when overriding .NET methods from Python by @lostmsu in Support for byref parameters when overriding .NET methods from Python #1663
• Performance tests with baseline from Pypi by @filmor in Performance tests with baseline from Pypi #1667
• Move code to subdirectories and rename or split up by @filmor in Move code to subdirectories and rename or split up #1665
• Added ARM64 CI action by @lostmsu in Added ARM64 CI action #1669
• Only run CI on pushes to master and on all pull requests by @filmor in Only run CI on pushes to master and on all pull requests #1670
• Temporary fix method binder for out parameters by @eirannejad in Temporary fix method binder for out parameters #1672
• Added todo note to ensure CLA is signed by @eirannejad in Added todo note to ensure CLA is signed #1674
• Add tests for exception leaking. by @BadSingleton in Add tests for exception leaking. #1679
• We can drop the import hack as we are now using the newer import mechanics by @filmor in We can drop the import hack as we are now using the newer import mechanics #1686
• Update CHANGELOG.md by @nobbi1991 in Update CHANGELOG.md #1690
• Allow dynamic PyObject conversion to IEnumerable by @lostmsu in Allow dynamic PyObject conversion to IEnumerable #1697
• add GitHub URL for PyPi by @andriyor in add GitHub URL for PyPi #1708
• Make methods of PyObject inherited from its base .NET classes GIL-safe by @lostmsu in Make methods of PyObject inherited from its base .NET classes GIL-safe #1711
• Support for BigInteger (C#) <-> PyInt by @lostmsu in Support for BigInteger (C#) <-> PyInt #1710
• On shutdown from Python release all slot holders by @lostmsu in On shutdown from Python release all slot holders #1712
• Clear weakref list when reflected object is destroyed by @lostmsu in Clear weakref list when reflected object is destroyed #1758
• Clear weak reference list when an extension type is destroyed by @lostmsu in Clear weak reference list when an extension type is destroyed #1761
• Fix layout of NativeTypeSpec on 32 bit platforms by @lostmsu in Fix layout of NativeTypeSpec on 32 bit platforms #1765
• Implement IConvertible on PyObject by @filmor in Implement IConvertible on PyObject #1762
• Ensure that codec tests are run by @filmor in Ensure that codec tests are run #1763
• Fix decimal default parameters by @filmor in Fix decimal default parameters #1773
• Work around potential Mono bug, that hangs the runtime when new threads start by @lostmsu in Work around potential Mono bug, that hangs the runtime when new threads start #1779
• Miscellaneous fixes and cleanups by @filmor in Miscellaneous fixes and cleanups #1760
• Fix enum codec by @filmor in Fix enum codec #1621
• Disallow runtime shutdown when the Python error indicator is set by @lostmsu in Disallow runtime shutdown when the Python error indicator is set #1780
• Multiple fixes related to Dictionary.Keys bug by @lostmsu in Multiple fixes related to Dictionary.Keys bug #1786
• Drop Python 3.6 support by @filmor in Drop Python 3.6 support #1795
• Move to modern setuptools with pyproject.toml by @filmor in Move to modern setuptools with pyproject.toml #1793
• Min/MaxSupportedVersion and IsSupportedVersion on PythonEngine by @filmor in Min/MaxSupportedVersion and IsSupportedVersion on PythonEngine #1799
• Min/MaxSupportedVersion and IsSupportedVersion on PythonEngine by @lostmsu in Min/MaxSupportedVersion and IsSupportedVersion on PythonEngine #1798
• Add explicit tests for vararg call by @filmor in Add explicit tests for vararg call #1805
• Fix demo scripts by @filmor in Fix demo scripts #1802
• fixed ForbidPythonThreadsAttribute being ignored in certain scenarios by @filmor in fixed ForbidPythonThreadsAttribute being ignored in certain scenarios #1815
• Add test for enum int conversion by @filmor in Add test for enum int conversion #1811
• Implement configuring clr from environment by @filmor in Implement configuring clr from environment #1817
• Take GIL when checking if error occurred on shutdown by @filmor in Take GIL when checking if error occurred on shutdown #1836
• Fix (U)IntPtr construction by @filmor in Fix (U)IntPtr construction #1861
• Fix string construction by @filmor in Fix string construction #1862
• Fix docstring for directly constructed types by @filmor in Fix docstring for directly constructed types #1865
• Fixed a leak in NewReference.Move by @lostmsu in Fixed a leak in NewReference.Move #1873
• Add XML docs to NuGet by @lostmsu in Add XML docs to NuGet #1878
• Mention the need for Initialize and BeginAllowThreads in the README by @lostmsu in Mention the need for Initialize and BeginAllowThreads in the README #1897
• Disabled implicit seq to array conversion by @lostmsu in Disabled implicit seq to array conversion #1902
• Explicit float and int conversion for builtin types by @filmor in Explicit float and int conversion for builtin types #1904
• Fill nb_index slot for integer types by @filmor in Fill nb_index slot for integer types #1907
• Fixed use of the process handle after Process instance is garbage collected by @lostmsu in Fixed use of the process handle after Process instance is garbage collected #1940
• Fixed new line character at the end of informational version by @lostmsu in Fixed new line character at the end of informational version #1941
• Enabled test for NoStackOverflowOnSystemType by @lostmsu in Enabled test for NoStackOverflowOnSystemType #1943
• Config-less CoreCLR and improved runtime load message by @filmor in Config-less CoreCLR and improved runtime load message #1942
• Implicit float conversion in function calls by @filmor in Implicit float conversion in function calls #1908
• Documentation by @filmor in Documentation #1863

New Contributors

• @DanBarzilian made their first contribution in Increase ob's ref count in tp_repr to avoid accidental free #1160
• @SFM61319 made their first contribution in Add syntax highlighting to Python code examples in README.rst [docs] #1208
• @danabr made their first contribution in Ensure only implementers of IEnumerable or IEnumerator are considered Iterable #1241
• @alxnull made their first contribution in Non-delegate types should not be callable #1247
• @BadSingleton made their first contribution in Fix illegal delegate usage #1328
• @tminka made their first contribution in Incorrectly using a non-generic type with type parameters now produces a helpful Python error instead of throwing NullReferenceException #1326
• @christabella made their first contribution in Operator overloads support #1324
• @gpetrou made their first contribution in Add GetPythonThreadID and Interrupt methods in PythonEngine #1337
• @pkese made their first contribution in Add a failing test for Unicode conversion #1467
• @eirannejad made their first contribution in Temporary fix method binder for out parameters #1672
• @nobbi1991 made their first contribution in Update CHANGELOG.md #1690
• @andriyor made their first contribution in add GitHub URL for PyPi #1708

Full Changelog: v2.5.2...v3.0.0