Updated 3.12x version of the package with compiled .deb file

Converted to 3.12e

Added back in the yaml.c file

Force compile and install of libyaml bindings

Force compile and install of libyaml bindings

Force compile and install of libyaml bindings

Updated README and announcement.

Bumped the version number.

Do not attempt to build extensions on platforms other than CPython.

Minor formatting cleanup.