Merge pull request #1 from inkarkat/docfix-distractfree_hook

Docfix distractfree hook
Merge pull request #2 from inkarkat/enh-accessor-for-active-state

ENH: Add DistractFree#Active() accessor for active state.
Merge pull request #3 from inkarkat/cleared-statusline-for-padding

Ensure that the padding's statuslines are empty.
small updates
include foldmarkers