* Added possibility to auto-save/load parameters for each created
  plugin.
* Some fixes needed for LookAndFeel code generation.
* Fixed plugin type wasn't loaded correctly into PluginGenerator after
  restarting.
* Fixed boolean parameters stored incorrect values inside.
* Fixed some bugs with parameters.

* Added ParametersEditor;
* Some improvements of Parameter class;
* Added possibility to generate code for parameters;
* Added possibility to save/load parameter in the project file.
* Other major and minor improvements.

Refactoring.

* Now ChannelSelector class contains three instances
  of TiledButtonGroupManager class (AUDIO, RECORD, PARAM).
  This managers own appropriate buttons, position it, responsible
  for all animations, fuzzy selection via dragging mouse, etc.
* Button group managers minor fixes.

* ParameterSlider: added possibility to change rotary fill colour.
* CAR gain slider: changed rotary fill colour.