Version 6.6

Version 6.6 MAR 2021

- fix: click on left panel tab can't correctly hide it when project view is not visible
- change: use 24x24 icons for menus and toolbars by default
- fix: wrong position of left panel tabs' icons
- add: icons tab in the environment dialog
- add: file assoc settings '.cc' files
- change: remove the theme option in the environment dialog 
- enhancement: correctly handle extern variable declarations.
- fix: errors in the included XEGE library
- fix: highlighted selected words not correctly cleared
- fix: devcpp crash when watch view has contents and exit devcpp. 
- change: the "ignore case when complete" option in the editor options dialog's completion tab was turned on by default.
- change: Localized the dev-cpp's applicaton name