remove unneeded 'use LaTeXML' which seems to cause redefinition issues
make the SkipSpaces and Skip1Space parameter types succeed whether or not the Gullet returns useless values from it's methods
another short session with perl critic
OS-independent separator for ENV variables
Merge pull request #10 from dginev/portable_env_separator

OS-independent separator for ENV variables
Merge remote-tracking branch 'upstream/master'