Wrap source lines and re-implement line numbers#14

Merged

jgm merged 13 commits intojgm:masterfrom dbaynard:feat/line-numbers

Sep 9, 2017

+82-41

Commits on Aug 29, 2017

Apply default highlighting to 'code span.*' using descendant not child selector
dbaynard
committed

Commits on Sep 9, 2017

Restore default previous (lack of) wrapping of code
dbaynard
committed