Update version post-v0.8.0 release for dev
Update version post-v0.8.0 release for dev

Now on development towards 0.9.0 release.

Signed-off-by: Phil Estes <dbac1f450dc8326caa7ba104b384a0eca642250c@gmail.com>

estesp/manifest-tool,estesp/manifest-tool