docs: add changelog for 0.9.2

docs: add changelog for 0.9.1

docs: add changelog for 0.9.0 (NativeScript#371)

docs: add changelog for 0.8.0

docs: add changelog for 0.7.3

docs: add changelog for 0.7.2

release: cut the 0.7.1 release (NativeScript#199)

* release: cut the 0.7.1 release

* docs: add changelog for 0.7.1

docs: add changelog for 0.6.3

docs: add changelog for 0.6.2

docs: add changelog for 0.6.1