BUG: multi-index output formatting
Merge pull request #7232 from bjonen/fix_7174

BUG: multi-index output formatting is buggy (GH7174)
DOC: fix api docs
DOC: clean-up docstrings of option functions

so they render nice with sphinx without warnings
Merge pull request #7236 from jorisvandenbossche/doc-fixes2

DOC: clean-up docstrings of option functions
DOC: corrections in v0.14.0 / release
DOC: put in anticipated release date in release / v0.14.0 (May 31, 2014)