Merge branch 'dev' into feature_pane_class_decoration
Fix changes from merging back dev into this branch
Optimize minimap update by removing a wrapper instead of all lines
Merge branch 'feature_pane_class_decoration' into dev
Merge branch 'dev' of https://github.com/fundon/atom-minimap into dev
Fixes bad measure of editor lines height

I don’t really understand the reason behind but the editor lines div
have extra padding on top and bottom that changes
with the editor scroll. But it makes measuring the lines height using
the `outerHeight` method doesn’t return the value we expect.