Readme updated

Merge pull request #12 from prmeyn/docs/readme-custom-events

Every tab of a session gets the instruction; README on custom events (10.2.1)

The package now carries the whole browser channel instead of leaving every host to copy it

Channel owns the browser handshake, instructions and sign-in/out
The package now carries the whole browser channel instead of leaving every
host to copy it:

• Reserved Channel.* wire names resolve to built-in actions (Register,
  VerifyConnection, DownloadInstruction, KeepAlive, SignOut); a host action
  under that prefix fails startup.
• ChannelPushService.PushInstructionAsync is the one public push: the
  instruction is stored, a pointer is pushed, the browser downloads it once.
  Downloads are bound to the owning session. Raw SendTo* are internal.
• IChannelInstructionStore and IChannelTokenStore, in-memory by default,
  MongoDB via AddSignedChannelMongoDb / AddSignedChannelMongoDbEphemeralStores.
• ChannelSessionService.SignInAsync/SignOutAsync tell every tab.
• Hooks for host bookkeeping: IPresenceObserver.OnConnectionBoundAsync,
  IConnectionChangeNotifier now also fires when a tab is verified, and
  IChannelSignOutObserver.
• First .NET test project: the real endpoints on a test server, driven by a
  C# stand-in for the browser. Run in CI.

Breaking: the PoC-era WebBrowsers.* names are gone.

Latest nugets

Merge pull request #10 from prmeyn/chore/bump-own-packages

chore: bump own packages ahead of v10.1.1

Private keys in indexed DB

Merge pull request #8 from prmeyn/feat/non-extractable-keys

Client: keep private keys as non-extractable CryptoKeys in IndexedDB

Latest nugets

v10.0.0

Latest nuget