Support both [^...] and [!...] for globset class negation

[okdana]

Fixes #663.

I hope this is the idiomatic way to do this. Seems to work at least:

% ls
abc  bbc  cbc  dbc

# Old behaviour
% \rg -u --files -g '[!ab]bc'
cbc
dbc
% \rg -u --files -g '[^ab]bc'
abc
bbc

# New behaviour
% rg-dev -u --files -g '[!ab]bc'
cbc
dbc
% rg-dev -u --files -g '[^ab]bc'
cbc
dbc

For the tests i just duplicated a bunch of the ones that were there for [!...] 🤷‍♀️

[okdana]

Oops. Forgot to bump the globset version used by ignore. Pushing fix now....

Does the ignore version need changed too?

[BurntSushi]

@okdana This looks great! The implementation itself is fine, and while I appreciate bumping the version, could you actually remove that part of the PR? I usually take care of version bumping whenever I do the next release. And yeah, ignore and ripgrep itself technically need semver bumps as well. (Which is fine.)

[okdana]

Oh, sure. Done, rebased

[BurntSushi]

Awesome thank you! :-)