Fixed a bug with trying to filter dirs when repackaging a package during the install process in ST3
Added some code to make sure the zipfile is closed during the install process to prevent exceptions trying to clean up the tmp dir on Windows
Added checks to ensure that channels and repositories are served over HTTP
Fixed a bug comparing four+ dotted version numbers (e.g. 1.6.9.0) with a semver version
Removed verbose version comparison console messaging
Fixed str+bytes bug with saving a new CA cert in ST3
Simplified saving new CA cert since Python 2.6 can handle b"" str syntax
Changed CA certs to now be stored on disk in the User package so that Package Control can be installed as a .sublime-package file on ST3
Fixed semver conversion of 4+ dotted version numbers to use + instead of - for the separator
Fixed printing installation and upgrade messages in ST3
Added cmp_to_key for Python 2.6 compatibility
Added the package_message command to be reloaded
Bumped version to 2.0.0-alpha3
Simplified importing command classes
Removed not found messages from package_file_exists(), changed read_package_file() to only print when debug is on
Added an upgrade notice to make sure users are using a compatible version of Sublime Text 3
Changed PackageCleanup to be scheduled via the plugin_loaded() function for compatibility with ST3