Improved VarInt serializer.
Serializing speed test got improved by at least 20%
Same test build command in both Debug and Release
Hide generation of FieldID
Serialize known VarInt using WriteByte instead of buffer allocation.
Optimized serialization speed by 0.1%
Optional reuse of MemoryStream.

Change the behavior using one of the following lines

ProtocolParser.Stack = new AllocationStack(); //Default
ProtocolParser.Stack = new ThreadSafeStack();
ProtocolParser.Stack = new ThreadUnsafeStack();