Fixes support for comments above and below statements and for semicol…

…ons at end of single statements (cs50#98)

* fixes bug whereby comments before query yielded wrong return value

* tolerates semicolon at end of single statement

* removed whitespace

* fixed comment

* added test

* added test for semicolon

Merge pull request cs50#93 from cs50/develop

Fixes colons in strings, catches SQLAlchemy warnings

Merge pull request cs50#86 from cs50/develop

4.0.2

Merge pull request cs50#83 from cs50/develop

Fixes error with ProxyFix

Merge pull request cs50#80 from cs50/develop

deploys 4.0.0

Merge pull request cs50#78 from cs50/develop

adds support for other paramstyles

Merge pull request cs50#70 from cs50/develop

removes Reader

Merge pull request cs50#68 from cs50/develop

v3.0.1

Merge pull request cs50#67 from cs50/develop

2019 version

Merge pull request cs50#63 from cs50/develop

v2.4.4