Fix cases where file encoding was not handled properly in the tool (fixes #563)
Updated documentation and add argument validation assertion for SemPred
Fix documentation comments generated for labeled alternatives (fixes #543)
Merge pull request #618 from sharwell/fix-563

Fix cases where file encoding was not handled properly in the tool
Merge pull request #619 from sharwell/sempred

Updated documentation and add argument validation assertion for SemPred
Merge pull request #620 from sharwell/fix-543

Fix documentation comments generated for labeled alternatives