Improve buffer management (#6)

* Use circular buffers for input/output buffering

* Add a soft limit for the internal input/output buffers

* Start from initial capacity when growing a buffer after shrinking it

* Only apply the soft capacity limit when the buffers are empty

* Temporarily hardcode the soft-limit for backwards-compatibility

* Bump version to 0.10.1

Author: koute

Cargo.toml

@@ -13,7 +13,7 @@ license = "MIT"
 name = "parity-ws"
 readme = "README.md"
 repository = "https://github.com/paritytech/ws-rs"
-version = "0.10.0"
+version = "0.10.1"
 
 [dependencies]
 byteorder = "1.2.1"