- edit controls size in designer mode for demo app form
Merge branch 'develop' of github.com:alexander-makarov/ExpandCollapsePanel into develop

Conflicts:
	ExpandCollapsePanelDemo/Demo.Designer.cs
- remove all predefined minimum sizes for ExpandCollapseButton and ExpandCollapsePanel, now panel in collapsed state has no gaps and looks more compactly
- hide inner controls for collapsed panel (main purpose to avoid showing of top edge of inner controls)
Merge branch 'animation-on-expand-collapse' into develop

Conflicts:
	MakarovDev.ExpandCollapsePanel/ExpandCollapsePanel.cs
Merge branch 'develop'
Merge branch 'master' of github.com:alexander-makarov/ExpandCollapsePanel