1.6

This release is containing bugfixes only, so no new features this time.

Show error when the update installer file size is less than 5MB in f3edc06 by @wrt54g
Show an error when the latest version number from the live update server is not a number. in 1d6ea64 by @wrt54g
Version checker to live update in 968ee97 by @wrt54g