Update the readme

Signed-off-by: Philip Luyckx <philip.luyckx@gmail.com>
Add license to utils code

Signed-off-by: Philip Luyckx <philip.luyckx@gmail.com>
Fix bug in period sleep when sleep <= 10

The periodsleep plugin was not enabled when small sleeps were used.

Signed-off-by: Philip Luyckx <philip.luyckx@gmail.com>
Set sleep to 10 seconds for dev version

Signed-off-by: Philip Luyckx <philip.luyckx@gmail.com>
Fix bug: make sure delta_time > 0

This can only happen when the periodsleep plugin is not working correctly.
This bug was found when changing sleep to 10 before commits
24c8f89d197d87e4a5fe8cd730dcdfde8d6b1d13 and f5e87d0d09619a8adb8147874f72e5d7f36070e2

Signed-off-by: Philip Luyckx <philip.luyckx@gmail.com>
Merge branch 'dev' into alpha