Merge #206

206: feat: port `ser::Serializer` to `io::Write` r=kvark a=Plecra

Makes the `Serializer` struct generic over `io::Write`, allowing it to be used with more types (and less allocation). As a side-effect, the trailing commas are also removed from the output.

This was a quick implementation, written in response to compiler messages, so it could probably do with some cleaning up. It might be a good time to approach #175 

Closes #202 

## TODO

- [ ] Update docs


Co-authored-by: Marli Frost <[email protected]>

Author: bors[bot]

src/de/mod.rs

@@ -5,10 +5,11 @@ pub use crate::parse::Position;
 use serde::de::{self, DeserializeSeed, Deserializer as SerdeError, Visitor};
 use std::{borrow::Cow, io, str};
 
-use self::id::IdDeserializer;
-use self::tag::TagDeserializer;
-use crate::extensions::Extensions;
-use crate::parse::{AnyNum, Bytes, ParsedStr};
+use self::{id::IdDeserializer, tag::TagDeserializer};
+use crate::{
+    extensions::Extensions,
+    parse::{AnyNum, Bytes, ParsedStr},
+};
 
 mod error;
 mod id;

src/parse.rs

@@ -4,8 +4,10 @@ use std::{
     str::{from_utf8, from_utf8_unchecked, FromStr},
 };
 
-use crate::de::{Error, ParseError, Result};
-use crate::extensions::Extensions;
+use crate::{
+    de::{Error, ParseError, Result},
+    extensions::Extensions,
+};
 
 const DIGITS: &[u8] = b"0123456789ABCDEFabcdef_";
 const FLOAT_CHARS: &[u8] = b"0123456789.+-eE";