Multiple enhancements

• [fix] close #323 (closed): Handle recipients pubkey with a checksum
• [test] close #285 (closed): Add copyright header in tests source files
• [doc] close #322 (closed): install_poetry: ARMbian requires libffi-dev
• [doc] close #317 (closed): install_pip: Raspbian requires python3-dev
• [mod] Update dependencies: Click, PyNaCl, Pytest…
• close #237 (closed): Move back to ':' pubkey and checksum delimiter
• [doc] readme: add G1pourboire to the list of wrappers
• [mod] black, pre-commit: Remove Python version requirement
• [enh] Improve -p/-gt options helps descriptions
• [mod] #172 (closed): balance: Properly name variables
• [mod] balance: Get rid of useless comparison to M
• [enh] tx: Add small option for the comment
• [test] Make use of FAILURE_EXIT_STATUS constant
• [enh] Improve words on the certification confirmation table
• [enh] #232 (closed): Increase ASYNC_SLEEP to 0.15s to retrieve ids from tx_history
• [enh] #192: blocks: Replace while by for loops, use boolean