Merge pull request #32 from ahaarrestad/master

Fixed bug in ValueConverterRegistry
fix typo while reviewing changes from @ahaarrestad
Improve test coverage for the ValueConverterRegistry
[maven-release-plugin] prepare release constretto-2.1.1
[maven-release-plugin] prepare for next development iteration
2.1.1 info
Merge pull request #1 from constretto/master

sync