* Use standard KC_ALGR, remove language-specific redefinitions
* Use ALGR instead of ALTGR in BÉPO and Canadian multilingual keymaps
* Remove BE_LALT, BE_LGUI aliases
* added an iso layout that supports split backspace and split rshift
* added a keymap which uses the iso layout with split backspace and split rshift
* added a #define LAYOUT_ for the KEYMAP_
* fixed missing newline