added exports for editor
preparations for lambda instruction
Merge branch 'master' into preproc-lexer
Satisfy hlint
Lexer: Make "unhandled escape sequence" error message useful.
More Lexer docs.

Issue #75.
Even more lexer docs.

Issue #75.
Lexer: Docs for 'parse' function.

Issue #75.
Yet more lexer docs.

Issue #75.
Surprise: More lexer docs!

Issue #75.
Lexer: Move more error messages into ErrorHandling module.
Lexer: Document fromAST and toAST.

Issue #75.
Lexer: Document the process function.

Issue #75.
Lexer: Add module header.

Issue #75.
Merge branch 'preproc-lexer'

Closes #75.
Merge branch 'master' of github.com:SWP-Ubau-SoSe2014-Haskell/SWPSoSe14