v1.4.0

• ⚠️ HxDropdownToggle renamed to HxDropdownToggleButton to align with HxCollapseToggleButton and freeing the name for future non-button generic toggle
• HxButton.Defaults.Color changed to ThemeColor.None to avoid stop-the-world errors when the HxButton.Color is not set explicitly (see #14, credits to @robertmclaws for highlighting the issue and the discussion)
• HxButton - .btn class moved to CoreCssClass to allow better control in derived components
• [custom Bootstrap build] row height in tables (e.g. HxGrid) changed to 41px to align with Bootstrap default theme
• added new --hx-sidebar-item-color and --hx-sidebar-item-border-radius CSS variables to allow better customization of the HxSidebar
• documentation cleanup