Update submodule targets f80461c...ec55a63

* targets f80461c...ec55a63 (5):
  > Merge pull request #55 from wellle/fix/doc/tags
  > Merge pull request #53 from wellle/quote-selection
  > Merge pull request #52 from wellle/separator-and
  > Merge pull request #51 from wellle/expr-mappings
  > Merge pull request #50 from wellle/separator-equal