* Create single event handler for grid size events.
* Fix all frame windows to use new grid size event handler.
* Use offset relative to ID instead of ComboBox index to save last grid size.
* Move last grid size load/save setting into WinEDA_DrawFrame.
* Add equality and assignment operators the GRID_TYPE.
* Add current grid helper methods to BASE_SCREEN.
* Add GetPins helper to LIB_COMPONENT to replace GetNextPin where applicable.
* Add AppendMsgPanel helper to WinEDA_DrawFrame.
* Improve rounding for display of coordinates when millimeter units are selected.
* Replace component library editor new component dialog using wxFormBuilder.
* Rename component library draw items to conform to current coding standards.
* Add GetWidth() method to component library draw objects.
* Add regular expression key word search capability to component library object.
* Library component draw items now stored in Boost ptr_vector.
* Updated draw item object comparison to include greater and less than condition.
* Moved set parts per package code from component edit dialog to component object.
* Moved set alternate body style code from component edit dialog to component object.
* Tweaked component library file draw item sort order for improved file readability.
* Documented component object draw item sort ordering.
* Moved plot code to the appropriate library component and draw item objects.
* Fixed compiler type conversion warning in plot_common.h.
* Component library viewer restores state between uses.
* Fixed automatic zoom calculations in library viewer.
* Make library entry list dialog restore previous selection.
* Fix bounding box calculation for vertical field and text draw objects.
* Changed library draw object comparison to test for greater and less than.
* Initial preparation for merging separate library component draw item lists.
* Component library objects renamed for improved readability.
* Fields now move when selected in library editor.
* Add copy constructor to all library draw and library component objects.
* Added copy constructor to EDA_BaseStruct.
* Delete base screen in WinEDA_DrawFrame destructor to prevent potential memory leak.
* Fixed memory access bug when replacing and adding a component to library.
* Moved library component block manipulation code into component object.
* Removed all of the global variables used by the library editor main window object.
* The usual code cleaning and refactoring.
charras