Merge branch 'release/1.2.0'
Merge branch 'release/1.2.1'
- cleanup only on changes, closes #4
Merge branch 'release/1.2.2'
Add variable to have apt mount root read write

In cases where you have a read only root filesystem a snippet like this is
required to ensure apt is able to run correctly.

Obviously if /usr is on another filesystem that would need a fragment too but I
don't have a setup like that to test with.
renamed files