Package capabilites

[ococrook]

After a discussion with Lieven, for development reasons I suggest this stays at a label-free package with development of a package of isobarically tagged experiments in a seperate package. I think this will allow to development to be more focused. @lgatto what do you think.

To do: strip out the TMT stuff into a new package

[lgatto]

Indeed, that is a safer option for maintainability.