BUG: error in Float64Index with contains and non-float (GH7025)
Merge pull request #7026 from jreback/float_ni

BUG: error in Float64Index with contains and non-float (GH7025)
BLD: update submit_cache.py to to properly submit caches to iron.io
ERR: more informative error message on bool arith op failures
DOC: add release note and version doc/example