- rename EGC to Egc, EGCBackstop to EgcBackstop and ChannelPair to Channels.
- make the original type aliased structs non-public (e.g. ncdirect, ncalign…)
- fix and improve documentation for several types.
- revert renaming crate to nc on use.
- directly import the used types at the beginning of the module.
Now the rustdoc generated documentation is much cleaner.
