Cleanup lib.rs a little.

Author: hydra

src/lib.rs

@@ -1,22 +1,27 @@
 //! # Gerber-parser
 //!
-//! This is a simple parser in rust for Gerber file (or string). The underlying representation
-//! is built on the `gerber-types` crate.
+//! This is a parser in rust for Gerber file. The underlying representation is built on the `gerber-types` crate.
 //!
 //! Gerber files are the de-facto file format for PCB manufacturing, but are also used in other
 //! context, such as in microfabrication. It is an old format with a lot of baggage, but the
 //! [specification is well documented](https://www.ucamco.com/en/guest/downloads/gerber-format),
 //! there is an [online free viewer available](https://gerber-viewer.ucamco.com/) to check your designs,
 //! and the format is plaintext making it easy to work with.
 //!
-//! As the crate is still in the early version, expect significant changes over time, as both this
-//! crate and `gerber-types` will need to undergo changes.
+//! There are sibling crates to this crate, as follows:
+//!
+//! * gerber-types - underlying types for the parser - https://github.com/MakerPnP/gerber-types
+//! * gerber-viewer - a pure rust gerber viewer - https://github.com/MakerPnP/gerber-viewer
+//!
+//! This crate has matured, the API is simple and should be fairly stable now.  This crate is the primary driver to
+//! changes for the gerber-types crate.
 
-// Public modules
-pub mod util;
 #[macro_use]
 mod macros;
 
+// Public modules
+pub mod util;
+
 // Private modules - we re-export the public types from them below
 mod document;
 mod error;