Build and Bug fixes

• Modified Doxygen config file to generate dependency graphs #376
• Ran reformat #426
• Strengthen memory_order for refcount_down #433
• Update PR template #391
• Refreshing the clang-format file and checking the version #430
• Fix MultiKeyringNew proof so it runs again. #444
• Windows build fixes #446
• OSX build steps and README updates #453
• Fix duplicate in encryption context deserialization bug #408
• Fix a bug where framefmt serialize returns a wrong ciphertext size #385
• Fix: Improve initialization. #451

First Stable Release

• Changed links from awslabs to aws
• Initial stable release

Session and caching CMM helper functions

• Added API function to make session from keyring
• Added API function to make caching CMM from keyring
• Added "_from_cmm" to end of "aws_cryptosdk_caching_cmm_new" function name
• Changed "aws_cryptosdk_session_get_algorithm" to "aws_cryptosdk_session_get_alg_id"
• Fixed HKDF bug

A few more small build fixes

Build fixes (#355)

* Make sure AWS_CRYPTOSDK_PRIVATE_GITVERSION is defined in version.h

When build system couldn't detect a git version, this variable
was unset and causing build failures

* Don't run any network tests if AWS_ENC_SDK_END_TO_END_TESTS is FALSE

* Small fix to test to allow it to work on old Red Hat versions

MAP_ANONYMOUS is not defined without it on some older systems

* Update patch version number and changelog

cmake bug fix

• Fixed cmake bug regarding git version of KMS user agent
• Added CBMC header file needed by newer aws-c-common versions

First public release

Update README.md. (#348)

* Update README.md.

* Add additional Windows build requirement
* Add link to API documentation
* Highlight recommended shell to use for Windows setup

* Wording tweak to README.md.

Per PR feedback.