Preparation for sharing

- rustfmt
- clippy
- comments
- README

src/utils/mod.rs

@@ -1,25 +1,19 @@
 mod cache;
-mod replace_first;
-// mod interned_display;
-// mod interner;
-mod variant;
 mod print_nname;
 mod pushed;
-pub use pushed::pushed;
-pub use print_nname::{print_nname_seq, print_nname};
-// pub use interner::*;
-// pub use interned_display::InternedDisplay;
-pub use replace_first::replace_first;
-pub use cache::Cache;
-mod substack;
-pub use substack::{Stackframe, Substack, SubstackIterator};
+mod replace_first;
 mod side;
-pub use side::Side;
+mod string_from_charset;
+mod substack;
 mod unwrap_or;
+mod xloop;
+
+pub use cache::Cache;
+pub use print_nname::sym2string;
+pub use pushed::pushed;
+pub use replace_first::replace_first;
+pub use side::Side;
+pub use substack::{Stackframe, Substack, SubstackIterator};
 pub mod iter;
 pub use iter::BoxedIter;
-mod string_from_charset;
 pub use string_from_charset::string_from_charset;
-mod xloop;
-mod protomap;
-pub use protomap::ProtoMap;