Several Changes (see detailed comments)

- added filetypes: equ/int
- fixed a bug in the file (errant 's')
- refined comments, to treate a line continuation as a line comment too
- refined comments to exclude !=
- refined labels to exclude (case insensitive) DATA
- refined labels to allow _ in the first char, and _:. later on
- fixed implicits to look for the special char at the end of the label
- (( NON-WORKING )) currencyInPicture
in an attempt to fix string issues arrising from pictures like @N8.3~'~
- refined the hex portion of numeric constants (must start with a [0-9]