Merge pull request zyedidia#551 from samdmarshall/master

fixing hex number highlighting for nim

Add option to disable use of a the primary clipboard

Closes zyedidia#544

Fix string width for different sized tabs

Fixes zyedidia#475

Minor update

Merge

Update docs and readme

Update readme

Minor cleanup

See zyedidia#300

Merge pull request zyedidia#235 from toxinu/patch-1

Add missing comma

Update readme