Fix some formatting strings to prevent exceptions

Merge pull request #688 from alanmcgovern/improve-bep47-compatibility

Improve compatibility (arguably incorrect) BEP47 torrents

Prepare an alpha release for 3.0.3

Bump version to 3.0.2

Bump version to 3.0.1

Make MonoTorrent 3.0 stable

Create the 'out' directory before restoring packages

This makes it easier to guarantee the path always exists so msbuild
/t:Restore more reliably succeeds.

Don't rely on running the 'pack' command to create the directory.

Fix integration test failures under .net 4.7.2

If a socket is disposed after 'ConnectAsync' is invoked but before the
native 'connect' begins, you can get an 'unexpected'
objectdisposedexceptionw which causes the SocketAsyncEventArgs object to
be left in the 'operation is in progress' state forever.

This doesn't happen under newer frameworks, so use a fallback
implementation for .NET 4.7.2 and netstandard 2.0/2.1.

[core] Add extra logging around incoming/outgoing connections

[core] Add improved logging for unexpected peer_ids

If a peer sends a HandshakeMessage with a 'peer_id' that *does not*
match the 'peer_id' it sent to the tracker - log both the expected
and actual peer_ids.

Helps diagnose #614

It's probably a normal bittorrent client which is just randomising
the peer id on every connection attempt.