Enhancements:
-------------

* iron out compatibility with conda 4.3 #1667
* pytest improvements for a cleaner CI experience #1686 #1687

Bug fixes:
----------

* Avoid trailing semicolon in MSYS2_ARG_CONV_EXCL variable setting #1651
* filter .git directories more strictly (keep x.git folders, not .git) #1657
* fix 404's killing CPAN skeleton with newer conda versions #1667
* use pythonw to run tests on OSX when osx_is_app is defined in meta.yaml #1669
* ignore obnoxious .DS_Store files when packaging  #1670
* fix --source argument to download source specified in meta.yaml #1671
* fix slashes in file prefix replacement on Windows #1680
* fix multiple source url fallbacks (handle CondaHTTPErrors) #1683
* fix bizarre encoding errors on Windows with projects that embed binary in setup files #1685
* fix CPAN JSON file encoding issue on windows #1688
* revise retry when conda is missing files from a package #1690