Sort case clauses in toTree
WIP: Add code for expression processing
Sort methods in SGLRParsers
Change fallback for toTypeTrees

* try toTypeTree instead of announcing error
Add support for closures (might still be buggy)
Add support for designated assignment expression
Add support for block with SimpleResultExpr
Add support for IdFunExpr
Add support for operator names

* simply encode TermNames
Add support for procedure declarations
Add support for upper and lower bound types
Add support for compound types
Change String representation of Terms
Fix test for lower bound types
Add support for self type templates
Add support for access assignment expressions
Add support for long literals