1.4.0 - May 25 2016
  * add license explicitly (BSD 3-clause) (#26)
  * Rework elevation on Windows to not use separate batch file (#27)
  * Improve support for non-ascii characters (#27)
  * Migrate to Windows KnownFolder instead of CSIDL for win > XP (#27)
  * support istalling as SYSTEM user on Windows (for SCCM usage) (#29)
  * Add Appveyor for build testing (#30)
  * Drop CSIDL support in favor of uniform KnownFolder usage (#31)