Move all prototype modules to ampersand library
Entirely remove prototype

Main.hs from prototype can already do everything, so we only need to disable it from always generating a prototype.
Remove library and flags

The distinction between library and executable is no longer necessary, since we now have only one executable.
Cleanup & sort cabal file
Move .gitignore's to top level
Move files from src/lib to src
Move files from src/.../Ampersand_Prototype to src/.../Ampersand/Prototype

Only move the files in this step, without adapting the Haskell module names, to allow git to track the move.
Adapt Haskell module names to new file locations
Merge pull request #18 from AmpersandTarski/merge-ampersand-and-prototype-executables

Merge ampersand and prototype executables

One executable to replace them all! From now on, instead of "prototype args", simply use "ampersand --proto args".