map previous committers to github users?

[ThomasWaldmann]

https://github.com/discorporate/flatland/import/authors

there one can (optionally) map the users from the (previously mercurial/bitbucket) commit to github users.

[ThomasWaldmann]

I did the mapping for some obvious matches, but could not find all contributors.
So, if your mapping is still missing, just add a comment below.