fixed `for @x of xs` etc.
made empty `catch` return catchee
closes #184; implicit `by -1` when obvious
command: refactored using new features
closes #172; made `with` cascade and cascade return cascadee
fixed chaining onto `with`
closes #181; made pipe use `&` to reference input
made #& and #@ interpolated
fixed `n&-n`
fixed #185; hushed named function should evaluate to itself
allowed non-referencing `|>` and `with`
fixed #190; don't reuse reference variables
trailing placeholder parameters no longer affect arity
added quick map: `for xs => &` as short for `for x of xs => x` (#187)
fixed #192; trailing block comments in backcalls
fixed bound constructor with backcall
0.9.0
fixed #193; made `super` work in dynamically named methods
fixed #195
fixed `` `a` = while b => c `` etc.