v1.0.4

Changes:

• Fixed error where plugin applied to all open buffers and not just ones for the nroff filetype. This generated an error whenever you :w a non groff buffer (e.g. txt, md, etc) that happened to be open at the same time as a groff one.
• Fixed error where plugin would only hardcopy print -me macro documents.

NB - There is no release v1.0.3 - I generated the git tag incorrectly!

Full Changelog: v1.0.2...v1.0.4