v1.3.0-beta.1

The release fixes the issues and adds the features described below:

Features

• Add support for sorting drives by name (add sort_drives=true to the 'ui' section in you 'piso.conf' file)
• Allow step_size and default_size to be decimal values

Bug Fixes

• Fixed an issue where ISOs would not show up correctly under MacOS
• Fixed an issue where when selecting drive size, the user could keep going less than 0%