Refactoring
A factory that implements sharing.
Moving sppf and gss to models.
Merge branch 'master' of github.com:enso-lang/enso
Really rewriting symbols now.
Remove formatting stuff before hand.
Rules are patterns now.
Merged conflict.
Merge branch 'master' of github.com:enso-lang/enso
Made a mock GLL factory.
Restored lost changes...: