add ST workspace file to gitignore
(minor) mylang: set_loc(..., ploc(p)) -> set_loc_p(..., p)
(minor) mylang: newline_stack -> ignore_newline_stack
mylang: python 3.2 ast compatibility
mylang: more wise @rule and friends
(minor) mylang: renaming trailer to builder where appropriate:
(apply_trailer -> build_node, fold_trailers -> build_chain)
mylang: getting rid of atom_func_wloc
mylang: getting rid of alias_rule
mylang: getting rid of list_rule
(minor) mylang: rename suite_stack -> auxctx_stack
mylang: more careful handling of ignore_newline_stack from nl_off/nl_on
(minor) mylang: rename objdef -> typedef
(minor) mylang: moving some code around
(minor) mylang: rename xattr_chain -> name_trailers
(MAJOR) mylang: lots of grammar changes
 - throw out closures (at least for now)
 - typedefs now support optional call arguments (like in PEP 3115)
 - typedef body has more strict structure (no more arbitrary stmts)
 - more straight-forward grammar specification
mylang: fix lexing of comments
mylang: runtime support for new grammar
inherit: stub for class attrs auto-inheritance
inherit: mro() and kicking mro recalc method
inherit: calculating new bases for an owned attr