move compact to its own file (#98)

* move compact to its own file

* fix bit vec and doc test

* add back derive

* address comments

src/bit_vec.rs

@@ -19,7 +19,8 @@ use std::mem;
 use bitvec::{vec::BitVec, bits::Bits, cursor::Cursor, slice::BitSlice, boxed::BitBox};
 use byte_slice_cast::{AsByteSlice, ToByteSlice, FromByteSlice, Error as FromByteSliceError};
 
-use crate::codec::{Encode, Decode, Input, Output, Compact, Error};
+use crate::codec::{Encode, Decode, Input, Output, Error};
+use crate::compact::Compact;
 
 impl From<FromByteSliceError> for Error {
 	fn from(e: FromByteSliceError) -> Error {

src/lib.rs

@@ -235,11 +235,16 @@ pub mod alloc {
 }
 
 mod codec;
+mod compact;
 mod joiner;
 mod keyedvec;
 #[cfg(feature = "bit-vec")]
 mod bit_vec;
 
-pub use self::codec::{Input, Output, Error, Encode, Decode, Codec, Compact, HasCompact, EncodeAsRef, CompactAs, EncodeAppend};
+pub use self::codec::{
+	Input, Output, Error, Encode, Decode, Codec, EncodeAsRef, EncodeAppend, WrapperTypeEncode,
+	WrapperTypeDecode, OptionBool,
+};
+pub use self::compact::{Compact, HasCompact, CompactAs};
 pub use self::joiner::Joiner;
 pub use self::keyedvec::KeyedVec;