BUG: fixed old version compatibility warnings
     added copy_to method to allow file upgrades to new version
didn't include the test file (in _static of docs dir)
DOC: minor doc updates to conform with new datetime64 behavior
DOC: release notes formatting fixup
BUG: updated the copy method to work with supplied options
ENH: added overwrite parameter to copy (defaults to True)
ENH/BUG: refactor of non-table HDFStore to put in object form (Storer class), for future enhancements
         added shape to non-table display
         closes GH2637
TST: more tests, added ncols to table output in printing
BLD: rebased - for some reason was not up to date
BLD: merged in #2632 locally, resolved a couple of issues
TST: ignore remove file errors
BLD: fixes error in tests on amd64 (because of open file handle)
DOC: release notes
Merge PR #2607