Pcap-ct

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- | Support for libpcap.set_buffer_size() via 'buffer_size'
| (optional) pcap constructor's parameter.
- | Added 'datalink' optional parameter to pcap constructor
| (thank you very much easy-easyGithub for the patch!).
- Tox configuration has been moved to pyproject.toml

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- Update for libpcap>=1.11.0b6
- Add support for Python 3.10 and 3.11
- Add preliminary support for PyPy 3.7, 3.8 and 3.9
- Setup update (currently based mainly on pyproject.toml).

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- | Fixed a bug in pcap.sendpacket()
| (thank you very much EvanSonnemansGithub
| for report and bugfix!).

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- Update for libpcap>=1.11.0b3
- Drop support for Python 3.6.
- Copyright year update.
- Setup update.

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- Update for libpcap>=1.11.0b2
- Copyright year update.
- Fixes for Linux.
- Setup update.

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- Add support for Python 3.9.
- Drop support for Python 3.5.
- | Fixed a critical setup of 'libpcap' package
| (thank you very much msrstGithub!).
- General update and cleanup.
- Fixed docs setup.