Add validation checks to AES algorithms. Fix some apple framework version checks.

What's Changed

• add github templates and bots by @jmklix in #143
• Unpin awslc by @TingDaoK in #144
• Fix for osx deployment target 10.9 by @waahm7 in #145
• Added validation for key and iv sizes. by @JonathanHenson in #146

New Contributors

• @jmklix made their first contribution in #143

Full Changelog: v0.5.24...v0.5.25