

changes since wmaker 0.17.5:
............................

I don't remember everything, but here it goes:

- fixed some bugs in text field
- added a incomplete implementation of split view (not yet usable)
- added a slider
- changed the filepanel stuff. Each application can have only 1 file panel.
The same panel will be reused every time you call for it, unless you free it.
- changed semantics of WMCreateFont() so that it returns NULL if the requested
  font can't be loaded
- removed WMAddDestroyCallback() 
- fixed bug in WMRemovePopUpButtonItem()
- added function for user specified item height in WMList
- added WMSetPopUpButtonText(). It will set the default text in the button
  when no options are selected
- fixed bug in remove/add item in already mapped popupbuttons. Note: it is
  not good practice to change the contents of a popup button when it's
  already visible and the user has probably interacted with it.
- fixed behaviour of "radio buttons"
- WMInitializeApplication() must be the first function to be called in the
  program
- removed applicationName, argc and argv arguments from the WMCreateScree...
  functions
- WMReleaseColor(scr,color) changed to WMReleaseColor(color)
- WMPaintColorRectangle() changed to WMPaintColorSwatch()
- added various functions in font and color handling
- added WMSetButtonFont()
- changed WMCreateCommandButton() so that the buttons it creates will change
	their label when pushed
- added WMGetSystemPixmap(WMScreen *scr, int image)
- added partial I18N support
- added libPropList requirement and some related utility functions
- added a interface to prooplist, so that it works as a user defaults db
- added WMWidthOfString() (removed WMFontWidthOfString())
- added WMDrawString()
- added WMSetTextFieldSecure(WMTextField *tPtr, Bool flag)
- WMGetListItem() will dup the returned string
- removed need for ProgName being defined
- rewrote hashtable stuff and made it available for outside use
- added notification functions, with view resize notification
- added WMSetWindowMinSize() and MaxSize()
- text editing notification
- added WMSetListPosition() etc.
- added WMInsertBrowserItem()
- the above 2 functions return WMListItem*, instead of Bool
- rewrote browser
- WMGetListItem() will return WMListItem*
- removed WMGetListItems() and WMSetListItems()
- fixed focus stuff for multi-window apps
- changed all WMList function names that contained index to row
