let colon stubs in assignments get simplified
compile before installing locally
show file in error message in moon loader
enhance missing value compiler error message
avoid creating unnecessary functions when using return keyword with statements and block_exps
lpeg.setmaxstack doesn't seem to exist with my version of lpeg
Merge github.com:leafo/moonscript

Conflicts:
	moonscript/base.lua
	moonscript/compile.lua
	moonscript/transform.lua