[ffigen] Simpler include/exclude, regexp based renaming for declarations (#62)

* Removes names/matches from include/exclude. Updated examples. Removed typedef incremental renaming.

* restored incremental typedef naming using IncrementalNamer, (this improves UniqueNamer's performance because there are less clashes

* added declaration renaming

* minor changes

* updated readme, changelog

* readme fix

* added to changelog

* simplified declaration using includer and renamer

* Includer: replaced firstMatch and end comparision with quiver.matchesFull