Fix error with sepBy (and operator evaluation) being too loose

bump version to 0.11.2

Require spaces around infix string ops

Remove info on using back ticks since they aren't supported now

Remove a little out of date information in the README

BUmp minor version, update changelog and readme

Add comments to examples

Return higher level parse error to avoid leaking implementation details

Undefined on eval variable not in scope. README tweaks

bump version, remove unused dist bits