implement hygiene for method args
debugging, NO UPSTREAM
make macros non-capturing
commenting out debugging printlns TEMP
remove outdated comment

I believe this comment is now irrelevant, as a result of
commit 6757053cffb585249105fbd76f
comments
WIP adding support for method macros
WIP adding support for method macros
commented-out parser code for method macros WIP
WIP adding method macros