reduced visibility of commands as they normally should only be needed interally

src/epd4in2/command.rs

@@ -10,7 +10,7 @@ use interface;
 #[allow(dead_code)]
 #[allow(non_camel_case_types)]
 #[derive(Copy, Clone)]
-pub enum Command {
+pub(crate) enum Command {
     /// Set Resolution, LUT selection, BWR pixels, gate scan direction, source shift direction, booster switch, soft reset
 	PANEL_SETTING = 0x00,
 	/// selecting internal and external power

src/epd4in2/mod.rs

@@ -60,7 +60,7 @@ use self::constants::*;
 use drawing::color::Color;
 
 pub mod command;
-pub use self::command::Command;
+use self::command::Command;
 
 
 /// EPD4in2 driver