Issue #109

Fixes issue #109 where nested parentheses within the parameter signature additional traits caused a failure to correctly recognise the signature as valid due to not matching the ParameterAbbrevDefinitionRegex.
I have removed the regex in favour of manually parsing the parameter signature so as to make the code clearer and more maintainable than what the regex would have had to become in order to match nested brackets within the additional traits as well as possible additional brackets in the signature description.
> on how much of an issue #109 actually is.

It is quite serious

> With regards to magic numbers their positions would have been checked by...

If you stand for it, then I guess it is OK as a disposable solution

Ok let's go this way (quicker) way. We will replace it soon™