Add regression tests for #209, #213

- Add some regression tests for these issues. As they are currently
  conflicting, they don't both work.
Resolve #213

- Add special case to deal with line numbers (which aren't followed
  by a dollar sign, i.e. '$')
Update regex with changes from "forum"

Update regex with decisions made here:

  https://github.com/SublimeText/CTags/issues/213
Fix typo in 'test_ctags.py'
Merge branch 'bug/213' into development