Fix measurement regressions in `move-over`

https://github.com/ef4/liquid-fire/issues/53#issuecomment-54738788
Merge pull request #60 from jamesreggio/jar-fix-regressions

Fix measurement regressions in `move-over`
minor bugfix release
Fix typo (#58)

Thanks to @netaisllc!
Add liquid-unless helper
Merge pull request #62 from jamesreggio/liquid-unless

Add `liquid-unless` helper