fix: properly stop client and server in OnApplicationQuit so that cli…

…ents still get a chance to send then 'quit' packet instead of just timing out. Also fixes a bug where OnStopServer/OnStopClient were not called when stopping the Editor. (MirrorNetworking#936)

perf: use 0 for null strings (MirrorNetworking#926)

* Use 0 for null strings

* Fix test

* No need for special case for ""

* No need for special case for ""

* Update Assets/Mirror/Runtime/NetworkReader.cs

Co-Authored-By: Paul Pacheco <[email protected]>

perf: Use 0 for null byte arrays (MirrorNetworking#925)

* Use 0 for null byte arrays

* Update Assets/Mirror/Runtime/NetworkWriter.cs

Co-Authored-By: Paul Pacheco <[email protected]>

* Update comments

* Update Assets/Mirror/Runtime/NetworkReader.cs

Co-Authored-By: Paul Pacheco <[email protected]>

* Update Assets/Mirror/Runtime/NetworkReader.cs

Co-Authored-By: Paul Pacheco <[email protected]>

fix: TelepathyTransport.ToString UWP exception

feat: network writer pool to avoid expensive allocations (MirrorNetwo…

…rking#928)

perf: return the contents of the writer as an array segment (MirrorNe…

…tworking#916)

* Return the contents of the writer as an array segment

* Use a safer ToArraySegment method and add some comments

* refactor: for readability and debuggability

* Test that ToArraySegment works

* Updated with master

* Update NetworkWriter.cs

perf: remove BinaryWriter, it allocates like crazy (MirrorNetworking#929

)

* perf: remove BinaryWriter,  it allocates like crazy

* useless comment

* Update NetworkWriter.cs

perf: remove syncvar boxing (MirrorNetworking#927)

fix: Telepathy already supports IPv6, but can no also connect to IPv4…

…-only servers again (e.g. Mirror Booster)

fix: ArraySegment<byte> work in Messages (MirrorNetworking#919)

Add ArraySegment<byte> tests and make them pass