Add most blocks without full implementation

src/main.rs

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#![recursion_limit="200"]
+#![recursion_limit="300"]
 #![feature(const_fn)]
 
 extern crate sdl2;

src/render/ui.rs

@@ -13,7 +13,6 @@
 // limitations under the License.
 
 use std::sync::{Arc, RwLock};
-use std::io::Write;
 use std::collections::HashMap;
 use resources;
 use gl;