Version 1.1.0

- Fix: Off-by-one error in `NameList::count_items()`
- Fix: Off-by-one error in `NameListBuf::try_remove()`
- Fix: `NameListBuf::pop` now works on a single-element list
- Adjusted error results for `i128` and `u128`
- Implemented `Default` for `&NameList`
- More traits derived for `MpInt` if the wrapped type supports them
- More doctest examples
- More unit tests
- Support handling `char` as `uint32` (used in OpenSSH mux protocol)