Revert "Merge pull request #37 from chdemko/master"
Revert "Merge pull request #37 from chdemko/master"

This reverts commit 386b48f2a923891925f0f5b0d6b45beff57fe046, reversing
changes made to f75821c1f949612672a12a3b6e4352da9176d2bb.

AugustH/pandocfilters,jgm/pandocfilters