v0.3.2 - Pose Onions, Custom Display in multiple modes

• Added ability to change the display type of Onion Skin feature. There are two available options: POSE & RANGE. POSE will display a specific number of frames before or after a current frame. RANGE will display all poses within the specific range provided.
• Updated the material display of Onion Skin objects. The onion skin feature used to switch the shading type of the scene to OBJECT automatically. This was disruptive and also was not intuitive at all. This has been replaced by the new system where the Onion Skin objects will be displayed properly with less opacity, in multiple modes including Render, Viewport, Material Preview and also if the shading type is changed to OBJECT.
• Changed the behaviour of clearing the onion skin objects when the feature is disabled, so that multiple objects with the same name is not created
• Updated Panel UI. Sections are now separated into boxes and can be expanded or shrinked by the user. Also added a contributions section to allow users to make a contribution to the addon.
• The upgrade option will move to the top, if the addon is sure that the latest version of the addon available online is different from the installed one. If the request gives an invalid response or if the network is unavailable, then the option will be at the very bottom.
• The Status Options section has been moved to the bottom as it is technically a legacy feature at this point.
• Added custom icons to be displayed on the contribution section