ForbesLindesay/ascii-math — pull request #1 by psalaets (2014-05-04 01:52:54+00:00)
Title: support for line symbol

Add support for ```line(AB)``` to generate double-ended arrow above AB. Expressions like ```bar(AB)``` and ```vec(AB)``` are supported so seems reasonable that ```line(AB)``` is too.

**This breaks backwards compatibility**

Before this change

> am('line').toString()
'l∈e'

After this change

> am('line').toString()
'↔'

> am('l in e').toString()
'l∈e'