Updates to byte buffer APIs and cmake.

v0.3.5

Byte buf utility functions - append that grows, append with internal …

v0.3.4

• getopt_long() implementation
• Android compile fixes
• Atomics fixes for gcc < 4.6
• Security bug fixes from AWS

v0.3.3

FreeBSD compile fixes

Added additional error codes.

Fix downstream build script. (#246)

Fix codebuild scripts to not need relative paths and use out of source builds.

Old Linux compatibilitiy fixes

Added CI job for x64 old linux. (#240)

* Added CI job for x64 old linux.

* Added 32bit builds, updated a comment.

Third alpha release

aws_task_run(#228)

my_long_task_name->fn(my_long_task_name, my_long_task_name->arg, AWS_TASK_STATUS_LONG_ENUM);

Second alpha release

CMake packaging cleanup/fixes (#214)

* Renamed cmake modules to avoid collisions when installed, added SOVERSION and VERSION to aws-c-common

* Use GNUInstallDirs to find where to install built libraries

* PR Feedback: leave VERSION and SOVERSION up to leaf projects