Fixed #45: Changed regular expression to match a comment to ignore semicolons that are escaped characters.

[jasongilman]

I changed the regular expression to the following

(?:(?<=[^\\])(;).*$\\n?)|(?:^(;).*$\\n?)

It's doing a look behind to see if the previous character isn't a \ or it's accepting semicolons that are at the beginning of the line.

This shows the difference after the patch.