[composer] Set dependencies for 0.3.8 release.

[composer] Set dependencies for 0.3.7 release.

[composer] Set dependencies for 0.2.6 release.

[composer] Set dependencies for 0.2.5 release.

[composer] Set dependencies for 0.3.6 release.

[composer] Set dependencies for 0.3.5 release.

[composer] Set dependencies for 0.2.4 release.

[composer] Set dependencies for 0.3.4 release.

Merge branch '0.3'

[composer] Set dependencies for 4.0.0-alpha2 release.