README: v2.1.0 ; POM: v2.2 development (Esri#161)

Geometry release v2.1.0

rename equals to Equals (Esri#143)

[maven-release-plugin] prepare release v1.2.1

updated to match an even more recent change to release deployment

[maven-release-plugin] copy for tag v1.1.1

[maven-release-plugin] copy for tag v1.1

Initial Open Source Release