Enumeration of the currently known SDK version codes. These are the values
that can be found in BuildVersion.sdkInt. Version numbers increment monotonically
with each official platform release.
Enumeration of the currently known SDK major and minor version codes.
The numbers increase for every release, and are guaranteed to be
ordered by the release date of each release. The actual values should
be considered an implementation detail, and the current encoding
scheme may change in the future.
