bump version (#315)

TF-8697: Support Ruby versions lacking OpenSSL constant (#300)

* Support ruby 2.3

This restores support for much older versions of ruby such as 2.3. While
these versions are EOL'd, they do still appear in usage in things like
embedded chef. It's not a big change to restore functionality, so we've
done that.

* Update changelog and version number

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Co-authored-by: Evan Phoenix <[email protected]>

Version v0.18.0 (#298)

[VAULT-5411] Add handling of 412 errors to with_retries (#266)

* Add handling of 412 errors to with_retries

* Raise state error in error() function like other error types

* Update changelog and version

Bump version to 0.16.0

Adding vault 1.5 circle ci (#245)

* Adding vault 1.5 to Circle CI tests

* Fixing order dependency bug for quota tests

Update CHANGELOG.md for v0.14.0

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

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

update minor version

Version 0.12.0