Update regenerator-transform to version 0.10.0.

[benjamn]

Q	A
Fixed Issues	none
Patch: Bug Fix?	no
Major: Breaking Change?	no
Minor: New Feature?	no
Tests Added/Pass?	no
Spec Compliancy?	no
License	MIT
Doc PR	no
Any Dependency Changes?	yes

The most notable improvement is that Regenerator now generates code that is easier for tools like Webpack to tree-shake, thanks to work by @modosc and @Andarist: facebook/regenerator#309

[hzoo]

Although I'd like to remove babel-runtime since this is the only package that still contains it as a dep

[benjamn]

Circle CI is pretty hosed right now, so these tests might have to be restarted later.

[modosc]

any chance of getting this backported to the 6.x branch as well? i'd be happy to make the pr

[hzoo]

@modosc since got pinged multiple times about another 6.x release that I'm doing now sure 😛 . Not that we don't do backports but the more backports and releases the less focus on 7.x.

[Andarist]

@hzoo aint sure how ur git flow works now, but it could be accommodate somehow to ease the pain with backports? especially when in the transition process between latest stable and development alpha/beta/candidates?

maybe adding backport labels would help with releasing the newest non breaking changes for the stable version?

[modosc]

@hzoo thanks, opened #6111

[hzoo]

Will need to fix the fixtures in both

[hzoo]

#6113 adds the test changes