0.7.0 rewrite dev

- remove everyting
- keep core
-rename bit_utils to bits
- add formatter for  color
- add float getters to color
- start with new drivers api

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "backends/desktop/glfw"]
-	path = backends/desktop/glfw
-	url = https://github.com/glfw/glfw
-[submodule "backends/3ds/libpicasso"]
-	path = backends/3ds/libpicasso
-	url = https://github.com/npid7/libpicasso
+[submodule "vendor/stb"]
+	path = vendor/stb
+	url = https://github.com/nothings/stb.git