refactor Kavorka::Signature::Parameter - long overdue, but wanted to have a half decent test suite first
rename a test case

--HG--
rename : t/xx-closures.t => t/90closures.t
support an "alias" trait
ro/locked traits
improve trait documentation
merge TODO lists
bump version; changelog
deps
ws
get non-positional parameters to work with alias trait
Added tag 0.000_07 for changeset 63586f1da7a7