Forgot to add phf as a dependency.

Clean up unused imports.

txtlang/Cargo.toml

@@ -7,6 +7,7 @@ build = "build.rs"
 
 [dependencies]
 isolang = "1.0"
+phf = "0.8"
 
 [build-dependencies]
 isolang = "1.0"

txtlang/build.rs

@@ -1,8 +1,7 @@
-use std::collections::HashMap;
 use std::env;
 use std::error::Error;
-use std::fs::{self, File};
-use std::io::{self, BufRead, BufReader, BufWriter, Write};
+use std::fs::File;
+use std::io::{BufRead, BufReader, BufWriter, Write};
 use std::path::Path;
 
 fn title(s: &str) -> String {