Bubble skeleton and Shift.
More functions.
Planetarium rotation.
Something that compiles.
A bit of cleanup.
Even more functions.
Merge branch 'master' into Bubble
Predicates and selectors.
Mutable selector.
Remove next.
XXX->
Comments.
Lint and constructors.
Integrate in plugin.
Merge branch 'master' into Bubble
It compiles.
All tests passing.
Lint.
Merge pull request #354 from pleroy/Bubble

Reify the physics bubble