Bump up the alpha version to 0.3.0-alpha3 (google#241)

Bump the stable version to 0.2.6 (google#232)

Bump up alpha version (google#194)

Bump up alpha version (google#190)

Bump the library version to 0.2.5 (google#158)

Bump the library version to 0.2.4 (google#144)

Bump the version to 0.2.3.

Change-Id: Ieb5f9bf3d3f32faf090e91ec9015bd1dc10ba46f

Merge pull request google#78 from google/bump_0.2.2

Bump version to 0.2.2

Bump version to 0.2.1

Bump version to 0.2.0

Change-Id: I1b1950ba952a6c2ad22bffe426e2a6ebcb84abb6