Break up the config module into one submodule per configuration
option. This commit also changes the default configuration with
the new options system to be varint (the old system still uses
fixint to preserve backwards compatibility).
Adds varint encoding to all numbers, including sequence lengths and enum discriminants. Varints are encoded according to the following scheme
1. If `u < 251`, encode it as a single byte with that value.
2. If `251 <= u < 2**16`, encode it as a literal byte 251, followed by a u16 with value `u`.
3. If `2**16 <= u < 2**32`, encode it as a literal byte 252, followed by a u32 with value `u`.
4. If `2**32 <= u < 2**64`, encode it as a literal byte 253, followed by a u64 with value `u`.
5. If `2**64 <= u < 2**128`, encode it as a literal byte 254, followed by a u128 with value `u`.
Signed integers are first encoded using zigzag format (see docs for details)
Co-authored-by: Maciej Hirsz <maciej.hirsz@gmail.com>
Co-authored-by: Nicole Mazzuca <nicole@strega-nil.co>
Deprecate the old config system and make a refined version of the internal config system public. Doing allows the Serializer/Deserializer to be exposed since all of its generic type parameters are now public.
* add option and config traits
* thread options everywhere
* add WithOtherLimit, WithOtherEndian, and update internal to take advantage of it
* wip
* add rest of the public API and fix tests
* dtolnay feedback
* remove serialized_size_bounded and replace it with a use of config
* remove inline from trait method
* finish documentation and add custom reader support
* minor config_map refactor
* doc changes
* add with_(de)serializer functions and their associated modules
Lena Hellström
jean-airoldie
alecmocatta
Ty Overby
boxdot