Ruby 2.0.0 to Ruby 2.2.5 NEWS-noted changes
These changes were reported in the high-level summary NEWS changelog provided by the Ruby project. They are a synthesis of changes from the NEWS logs of the changes from 2.0.0 to 2.1.0 and from 2.1.0 to 2.2.5 (there were no NEWS notes from 2.2.4 to 2.2.5 that changed). Any C API updates have been omitted, and changes have been compressed to include updates and compatibility changes for each class together. Ordering may also vary from the official NEWS changelog.