Pwntools v5 - Breaking changes roadmap

[peace-maker]

With Pwntools 5 we'd like to clean up the codebase and get rid of some legacy features like support for Python 2. This issue can be used to keep track of all the changes which were on hold until a major version bump.

• Remove Python 2 support
• Python 3.8+ type hints
• Add pyproject extras to make pwntools installs slim by default deps: make socks and serial optional #2245
• Remove deprecated commandline tools installing pwntools pollutes /usr/local/bin #2361
• Possibly switch ELF class to LIEF to allow easier PE / machO support
• Proper Windows support
• Switch order of keepends and drop commands of tube.recvline? Deprecate 'keepends' argument in favor of 'drop' #2476
• Strip newline in tube.recvline family of functions by default

Please leave a comment for anything missing or concerns.