Lemur version 1.11.0

This is a long overdue release containing many community patches, bug fixes, and some new features.

Full change log:

• Added IconComponent.setIconSize() to force the size of the icon before
  scaling.
• Added additional PopupState.showModalPopup() convenience methods that take
  a background color.
• Modified PopupState to automatically call runEffect("open") and runEffect("close")
  if the popup is a Panel (or subclass).
• Added SpatialTweens.focusOn() to set the focus to a particular spatial as part of
  animation.
• Fixed PopupState to take the current guiNode's scaling into account when calculating
  screen size for the blocker quad.
• Worked around an NPE in PopupState caused be a JME bug on Node.getWorldBound() when the node
  is empty.
• Added PickState methods for better managing "cursor interest" in the form of a
  request/release API.
• Modified GuiGlobals to have methods for calling the new PickState request/release API
  for cursor enabling.
• Modified GuiGlobals.setCursorEnabled(boolean) to internally call the new PickState.request/release
  calls. A new GuiGlobals.setCursorEnabled(boolean, force:boolean) method was added
  in case it is necessary to force the old behavior.
• Modified PopupState to automatically call GuiGlobals.requestCursorEnabled() and
  releaseCursorEnabled() when opening/closing popups. This may be a breaking
  change for some applications.
• Added a GuiGlobals.srgbaColor() method for conditionally creating linear colors from
  SRGB colors based on whether gamma is enabled or not.
• Modified the groovy style API to (by default) use srgbaColor() internally. A flag
  can be specified to turn this off.
• Fixed a bug in TextEntryComponent where the font wasn't being kept when changed. This caused
  issues like cursor positions being wrong, etc..
• Deprecated Lemur's BaseAppState so apps know to prefer JME's built in version.
• Fixed issue #53 where Panel.runEffect() would incorrectly return false for effects
  with no channel.
• Fixed issue #54 where texture scaling was not being reapplied to cloned
  QuadBackgroundComponents.
• Modified the GUI bucket picking code to dynamically say the Ray min/max Z values
  based on the world bounds of the root spatial. This should fix issue #55 as
  well as several other problems caused by GUI elements above z=1000. Also,
  negative Z GUI values are properly supported now, also.
• Fixed an issue with key repeats in TextEntryComponent and lwjgl3 which seems to
  separate 'pressed' events from 'repeating' events for some reason.
  See PR 65.
• Fixed the toString() of KeyAction to add the closing bracket ']'.
• Modified TabbedPanel to expose a tab selection model, support get/set of selected
  tab, expose the list of tabs, and added insert/remove functionality. This
  meets and exceeds feature request #59
• Fixed a bug in DragHandler where ortho dragging wasn't properly translating child
  spatials.
• Enhanced DragHandler to allow indirect manipulation of a spatial by specifying
  a draggable locator Function. Useful for things like titlebar based dragging.
• Set sourceCompatibility to 1.7 and turned on detailed warnings.
• Fixed a bunch of deprecation and 'unchecked' warnings.
• Part of that was a conversion from extending the internal BaseAppState to JME's
  BaseAppState which is a potentially breaking change for any application code
  that extends Lemur app states but expects enable()/disable() instead of
  onEnable()/onDisable().
• Added a Button.click() method to allow calling code to manually trigger a button
  click.
• Added Button.ButtonAction.Hover for notifying listeners about when the mouse is
  hovering over a button. This is useful for implementing things like repeating
  actions, etc.
• Updated the built-in glass style to add repeat to slider +/- buttons.