Apt-smart

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- Support 'mirror://' scheme: https://github.com/martin68/apt-smart/issues/3
- Update releases.py bundled Releases by running 'make releases', related https://github.com/martin68/apt-smart/issues/4
- In python2 decode() default encoding is ascii, causing https://github.com/martin68/apt-smart/issues/5 , specify utf-8
- Fix current_mirror in linuxmint's ubuntu mode, causing -U -c 'mirror_url' changed linuxmint's mirror_url instead of ubuntu's

.. _Release 7.1.3: https://github.com/martin68/apt-smart/compare/7.1.3...7.1.3

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- Support Python 3.8
- Add `-C --codename` flag to create chroot with a distribution codename.
- Blacklist BASE_URL mirror if matches blacklist pattern, this helps when BASE_URL (official) mirror is the only up-to-date one and you find it so slow that you'd like to blacklist it.

.. _Release 7.1.2: https://github.com/martin68/apt-smart/compare/7.1.1...7.1.2

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- For Linux Mint, backup official-package-repositories.list to backup_dir: backup_by_apt-smart
- In Readme, add install commands for Linux Mint and a note about run with sudo

.. _Release 7.1.1: https://github.com/martin68/apt-smart/compare/7.1.0...7.1.1

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- Add support for Linux Mint
- Add -U, --ubuntu to opt in Ubuntu mode for Linux Mint to deal with upstream Ubuntu mirror instead of Linux Mint mirror. e.g. --auto-change-mirror --ubuntu will auto-change Linux Mint's upstream Ubuntu mirror

.. _Release 7.1.0: https://github.com/martin68/apt-smart/compare/7.0.7...7.1.0

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- Fix install_sources_list() for Python 3
- Fix --change-mirror
- fix Travis CI  `io.UnsupportedOperation:fileno` error by changing the way to run test cases containing smart_update()
- More test cases

.. _Release 7.0.7: https://github.com/martin68/apt-smart/compare/7.0.6...7.0.7

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- Readme & help about proxy setting
- Deal with the [options] in sources.list by stripping it from sources.list, and then get it back when generating new sources.list ,
fix https://github.com/jblakeman/apt-select/issues/54
- Add a warning: custom mirror file's path and filename must NOT contain whitespace
- Add -R, --create-chroot=local_dir_absolute_path to create chroot with the best mirror in a local directory with absolute_path
- More test cases

.. _Release 7.0.6: https://github.com/martin68/apt-smart/compare/7.0.5...7.0.6