v2.1: Implement missing stuff, usability

More small changes:

• Add BanchoBeatmapInfoReply and BanchoMultiplayerJoin ISerializables
• Include XMLDOC in NuGet package
• Clean up PacketType docs
• Add overloads using Streams to BanchoSerializer
• Fix a typo in MultiSlotStatus

v2.0.1: Update bugged dependency

This release simply updates the osu.Shared dependency, since it contained a breaking bug.

v2.0: General improvements

• BREAKING: Rename BanchoReplayFrameBundle's SpectatedPlayerId to ExtraData
• Give Bancho* objects meaningful constructors
• Update some of the packet documentation
• Use osu.Shared for common types
• Bugfixes

v1.1, Usability update

This update makes HOPEless a little bit easier to use through some tiny changes:

• Add a constructor for Bancho types accepting bytes
• Initialize the Value field of BanchoIntList and BanchoStringList automatically
• Add a ToString() override for BanchoPacket

V1.0, late initial release

Releasing as v1.0 due to v1.1 coming up soon.