Revert "Hide module Text.Pandoc.Parsing."

This reverts commit 18a5c9a8bf071398f3976a7c2c255638e135de7c.

We want to do this eventually, but as it requires a major version
bump, let's wait til later.
Version to 1.10.1.1 since we no longer have API change.
Added needed sudo to osx package signing.
make_osx_package.sh:  Added step to check validity of signature.