Bug 931894 - [mozprofile] IOError in AddonManager.__del__ when trying to backup an already existent unpacked add-on. r=ahal
Bug 935422 - [mozprofile] Add-ons with unpack=true and already being a directory cannot be installed. r=ahal
Bug 935436 - [mozprofile] Prevent multiple add-on installations in AddonManager.install_addons() if source path is identical. r=ahal
Bug 917550 - [mozprocess] ProcessHandler commandline attr broken;r=wlach

Consistently store `cmd` as a string and `args` as a list. Throw an
error when `args` are over-specified. Document the complete usage of the
`cmd` and `args` options.
Bug 932337 - [mozprofile] Downloaded add-on should get a meaningful filename. r=ahal
Bug 932337 - Add missing test add-on 'invalid.xpi'
Bug 861984 - mozfile rmtree should retry on some Windows errors. r=wlach?
Bug 936705 - [mozprofile] Installing the same unpacked add-on after a profile reset() causes an exception in dir_util.copy_tree(). r=ahal
Bug 934542 - Make --debugger-args work via mozrunner. r=ted
Bug 934542 - bump mozrunner version to 5.27
Bug 935677 - Return code from mozprocess wait is wrong, r=wlach