Bug fixes:
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* respect context.offline setting  #3328
* don't write bytecode when building noarch: python packages  #3330
* escape path separator in repl  #3336
* remove deprecated sudo statement from travis CI configuration  #3338
* fix running of test scripts in outputs  #3343
* allow overriding one key of zip_keys as long as length of group agrees  #3344
* fix compatibility with conda 4.6.0+  #3346
* update centos 7 skeleton (CDT) URL  #3350

Contributors:
-------------

* @iainsgillis
* @isuruf
* @jjhelmus
* @nsoranzo
* @msarahan
* @qwhelan