remove design comments from bison config
fixes types computation for N_EQ operator
fixes a bug with void return-statements
added validation for while-statement
adds void value
minor fixes
adds relafix to build
adds String Type to RLang
adds builtin function 'print'
some error handling and more builtins
adds forward function declarations
minor fixes
adds Sets to RLang
fixes to scope cleanup
fixes error introduced in d51fc41b90784f71454c2478d153dab9b53ae690
fixes some memory leaks