Pwncat

Fixes
- Fixes: pwncat will re-accept during local portforwarding if the client quits (previously pwncat shutdown)

Fixes
- Fixed UTF-8 char conversion for Python3
- Fixed calculation for socket bytes sent
- Fixed shutdown handling for port scanner
- Fixed false positives for port scanner
- Fixed sending binary data from stdin
- Fixed self-inject mode if remote sends greetings or prefixes: 83
- Fixed remote command to respawn if it crashes due to bad user input

Added
- Implemented signal handler to distribute shutdown signals across threads
- Feature: `--no-shutdown` to copy the behaviour of OpenBSD netcat to keep stdin open after EOF
- Feature: `--http`
- Feature: `send-on-eof`
- CI: Integration tests for inject shell
- CI: Integration tests for different file transfer modes
- Added artwork

Changed
- Changed behaviour to close after EOF on stdin (can be reverted via `--no-shutdown`)
- Added faster method to validate remote files in CNC mode

Fixed
- Fixed freeze in raw mode: 81

Added
- Install instructions for ArchLinux

Added
- Feature: Rebind forever: `--rebind`: 44
- Feature: Wait between rebind attempts: `--rebind-wait`: 45
- Feature: Port hopping for rebinds: `--rebind-robin`: 46
- Feature: Send initial ping `--ping-init`: 48
- Feature: Zero-I/O mode (port scan) `--zero`: 32
- Feature: Safeword: `--safe-word`: 51
- Feature: Stateless UDP connect: `--udp-sconnect` and `--udp-sconnect-word`: 79

Changes
- Re-organized command line arguments for better overview

Added
- Feature: Be able to inject multiple reverse shells `--self-inject` by specifying a port list (comma separated, range or increment): https://www.youtube.com/watch?v=VQyFoUG18WY

Changed
- port argument not only takes comma seperated value or range, but now also an increment: `443+10`

Added
- Feature: Be able to specify source address and port for clients: 66