Numeric Parameter.
Integer Parameter.
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Widget for float parameter.
Add numeric parameter wiget.
Add test for integer parameter widget.
Better parameter UI.
Added generic collection class and wrote more tests.
More tests for dict added. One failing test.
Add parameter container and retrieve parameters from container. Update UI.
Merge remote-tracking branch 'aifdr/master'
 Fix top level layout to use a grid layout
Add spacing between value and unit.
Add unit and allowed units.
Fix merge conflict.
Add unit description to parameter description in widget.
Fix unit returned value.
Update string parameter.
Add string parameter widget.
Coding style.