Update CHANGELOG.md for v0.14.0

Bump version, add more rigid dependencies. (hashicorp#230)

* Bump version, add more rigid dependencies, add 0.13.0 changelog backport.

update minor version

Version 0.12.0

Version 0.11.0

Version 0.10.1

Version 0.10.0

Version 0.9.0

Version 0.7.3