Replace all output with macros from logging library

src/main.rs

@@ -19,5 +19,5 @@ fn main() {
     let logger = ImagLogger::init(&config);
     let rt = Runtime::new(config);
 
-    println!("Hello, world!");
+    info!("Hello, world!");
 }

src/module/mod.rs

@@ -37,8 +37,7 @@ impl Error for ModuleError {
 
 impl Display for ModuleError {
     fn fmt(&self, f: &mut Formatter) -> FMTResult {
-        write!(f, "ModuleError: {}",
-               self.description())
+        write!(f, "ModuleError: {}", self.description())
     }
 }
 

src/runtime.rs

@@ -36,6 +36,7 @@ impl ImagLogger {
     fn init_logger(lvlflt : LogLevelFilter) -> Result<(), SetLoggerError> {
         log::set_logger(|max_log_lvl| {
             max_log_lvl.set(lvlflt);
+            debug!("Init logger with: {}", lvlflt);
             Box::new(ImagLogger::new(lvlflt.to_log_level().unwrap()))
         })
     }