DOC: Moved note about cursor position in time series plots out of changes to pd.data.io.Options in v0.11.0
Merge pull request #3365 from spencerlyon2/DOCwhatsnew

DOC: Moved note about cursor position in TS plots out of changes to pd.data.io.Options in v0.11.0
BLD: use_build_cache.sh learned --force-overwrite and --debug
BLD: ci/print_versions.py, LC_ALL/LANG should default None
DOC: tweak deprecations message for display.line_width
Revert "BLD: ci/print_versions.py, LC_ALL/LANG should default None"

This reverts commit b9ca0ed1a5b44cd4c9983fd5ef64977ccb74e685.
BLD: ci/print_versions.py, LC_ALL/LANG should default to None
DOC: show the rplot import at the top level of the trellis plotting section
DOC: tweak docstring
CLN: elminate testing warning on 2.6, deprecated exception idiom
fix multiindex xs slicing bug
VB: add vbench for df.xs across row/col
BLD: travis network cache
BLD: use_build_cache.py - fix 2to3 caching and messages
Merge branch 'travis_make_it_faster'

* travis_make_it_faster:
  BLD: use_build_cache.py - fix 2to3 caching and messages
  BLD: travis network cache
PLEASE_TRAVIS_FASTER
Merge pull request #3383 from y-p/travis_make_it_faster

Travis-CI: Allow network cache opt-in for whitelisted forks
BUG: fix travis net cache
BLD/BUG: travis scripts should appreciate politeness in body as well as subject
BUG: GH3380 groupby will handle mutation on a DataFrame group's columns and fallback

     to non-fast apply

DOC: PTF