Early fixes

[Eragoneq]

All the existing tests are passing, but may need further review and some additional testing.

• Updated vulnerable dependencies
• Fixed an existing bug the usage in the ArrayIndexOutOfBoundsException #1 issue was incorrect
• Fixed most styling issues

Closes #1

[iiljkic]

http://www.bittorrent.org/beps/bep_0029.html check the section regarding the handshake where the seq number is initialized to an random value.

[Eragoneq]

http://www.bittorrent.org/beps/bep_0029.html check the section regarding the handshake where the seq number is initialized to an random value.

You're right, now I have noticed that the example code in the issue that the notion of client and server is reversed. As the server writes the data and client reads it, this is why the code expects 1 as the sequence number.

[tbocek]

Nice to see this kind of improvement!

[Eragoneq]

With no real breaking changes to the logic of the code, I will merge the current changes.
Further changes should be reviewed.