Fix #21 WM_NAME decoding issue

Issue where from_utf8 would error when presented with a latin-1 encoded
string, in the case of "Actualités"

Cargo.toml

@@ -25,6 +25,7 @@ toml = "0.5.6"
 serde = { version = "1.0.111", features = ["derive"] }
 itertools = "0.9.0"
 regex = "1"
+encoding = "0.2"
 
 [dependencies.i3ipc]
 version = "0.10.1"

src/lib.rs

@@ -27,6 +27,10 @@ extern crate lazy_static;
 
 extern crate toml;
 
+extern crate encoding;
+use encoding::{Encoding, DecoderTrap};
+use encoding::all::ISO_8859_1;
+
 pub mod config;
 pub mod icons;
 pub mod regex;
@@ -70,8 +74,15 @@ fn get_property(
     );
 
     let reply = cookie.get_reply()?;
-    let reply = std::str::from_utf8(reply.value())?.to_string();
-    Ok(reply)
+    if let Ok(s) = std::str::from_utf8(reply.value()) {
+        Ok(s.to_string())
+    } else {
+        let decoded = ISO_8859_1.decode(reply.value(), DecoderTrap::Strict);
+        match decoded {
+            Ok(s) => Ok(s),
+            Err(_) => Ok(String::new()),
+        }
+    }
 }
 
 /// Gets a window title, depends on wm_property config opt