Miscellaneous minor code cleanup

# Conflicts:
#	graphene/Cargo.toml

editor/src/tool/tool_options.rs

@@ -1,6 +1,5 @@
 use serde::{Deserialize, Serialize};
 
-// TODO: Rename this `ToolOption` to not be plural in a separate commit (together with `enum LayerDataTypes`)
 #[derive(Debug, Clone, Copy, Eq, PartialEq, Serialize, Deserialize, Hash)]
 pub enum ToolOptions {
 	Select { append_mode: SelectAppendMode },