Tagging bugfix release v1.10.2

Tagging Shadow release v1.10.1.

Tagging Shadow release v1.10.0.

Tagging bugfix release 1.9.2

Tagging bugfix release 1.9.1

tagging new release 1.9.0

tagging shadow-v1.8.0

Tagging release v1.7.0

-Support for multiple threads, LLVM/Clang, and Tor Controller

tagging v1.6.1

This is more like a pre-1.7.0 release, to get some
experimental multi-threading support out earlier.

tagging release 1.6.0