Update click requirement from <8.0,>=7.0 to >=7.0,<9.0

[dependabot-preview]

Updates the requirements on click to permit the latest version.

Release notes

Sourced from click's releases.

8.0.0

New major versions of all the core Pallets libraries, including Click 8.0, have been released! 🎉

• Read the announcement on our blog: https://palletsprojects.com/blog/flask-2-0-released/
• Read the full list of changes: https://click.palletsprojects.com/changes/#version-8-0-0
• Retweet the announcement on Twitter: https://twitter.com/PalletsTeam/status/1392266507296514048
• Follow our blog, Twitter, or GitHub to see future announcements.

This represents a significant amount of work, and there are quite a few changes. Be sure to carefully read the changelog, and use tools such as pip-compile and Dependabot to pin your dependencies and control your updates.

Changelog

Sourced from click's changelog.

Version 8.0.0

Released 2021-05-11

• Drop support for Python 2 and 3.5.
• Colorama is always installed on Windows in order to provide style and color support. 1784
• Adds a repr to Command, showing the command name for friendlier debugging. 1267, 1295
• Add support for distinguishing the source of a command line parameter. 1264, 1329
• Add an optional parameter to ProgressBar.update to set the current_item. 1226, 1332
• version_option uses importlib.metadata (or the importlib_metadata backport) instead of pkg_resources. 1582
• If validation fails for a prompt with hide_input=True, the value is not shown in the error message. 1460
• An IntRange or FloatRange option shows the accepted range in its help text. 1525, 1303
• IntRange and FloatRange bounds can be open (<) instead of closed (<=) by setting min_open and max_open. Error messages have changed to reflect this. 1100
• An option defined with duplicate flag names ("--foo/--foo") raises a ValueError. 1465
• echo() will not fail when using pytest's capsys fixture on Windows. 1590
• Resolving commands returns the canonical command name instead of the matched name. This makes behavior such as help text and Context.invoked_subcommand consistent when using patterns like AliasedGroup. 1422
• The BOOL type accepts the values "on" and "off". 1629
• A Group with invoke_without_command=True will always invoke its result callback. 1178
• nargs == -1 and nargs > 1 is parsed and validated for values from environment variables and defaults. 729
• Detect the program name when executing a module or package with python -m name. 1603
• Include required parent arguments in help synopsis of subcommands. 1475
• Help for boolean flags with show_default=True shows the flag name instead of True or False. 1538
• Non-string objects passed to style() and secho() will be converted to string. 1146
• edit(require_save=True) will detect saves for editors that exit very fast on filesystems with 1 second resolution. 1050
• New class attributes make it easier to use custom core objects throughout an entire application. 938
  • Command.context_class controls the context created when running the command.
  • Context.invoke creates new contexts of the same type, so a custom type will persist to invoked subcommands.
  • Context.formatter_class controls the formatter used to generate help and usage.
  • Group.command_class changes the default type for subcommands with @group.command().
  • Group.group_class changes the default type for subgroups with @group.group(). Setting it to type will create subgroups of the same type as the group itself.
  • Core objects use super() consistently for better support of subclassing.
• Use Context.with_resource() to manage resources that would normally be used in a with statement, allowing them to be used across subcommands and callbacks, then cleaned up when the context ends. 1191
• The result object returned by the test runner's invoke() method has a return_value attribute with the value returned by the invoked command. 1312
• Required arguments with the Choice type show the choices in curly braces to indicate that one is required ({a|b|c}). 1272
• If only a name is passed to option(), Click suggests renaming it to --name. 1355
• A context's show_default parameter defaults to the value from the parent context. 1565
• click.style() can output 256 and RGB color codes. Most modern terminals support these codes. 1429
• When using CliRunner.invoke(), the replaced stdin file has name and mode attributes. This lets File options with the - value match non-testing behavior. 1064
• When creating a Group, allow passing a list of commands instead of a dict. 1339
• When a long option name isn't valid, use difflib to make better suggestions for possible corrections. 1446
• Core objects have a to_info_dict() method. This gathers information about the object's structure that could be useful for a tool generating user-facing documentation. To get the structure of an entire CLI, use Context(cli).to_info_dict(). 461
• Redesign the shell completion system. 1484, 1622
  • Support Bash >= 4.4, Zsh, and Fish, with the ability for extensions to add support for other shells.
  • Allow commands, groups, parameters, and types to override their completions suggestions.
  • Groups complete the names commands were registered with, which can differ from the name they were created with.
  • The autocompletion parameter for options and arguments is renamed to shell_complete. The function must take ctx, param, incomplete, must do matching rather than return all values, and must return a list of strings or a list of ShellComplete. The old name and behavior is deprecated and will be removed in 8.1.
  • The env var values used to start completion have changed order. The shell now comes first, such as {shell}_source rather than source_{shell}, and is always required.
• Completion correctly parses command line strings with incomplete quoting or escape sequences. 1708
• Extra context settings (obj=..., etc.) are passed on to the completion system. 942

... (truncated)

Commits

• 9da1669 Merge pull request #1877 from pallets/release-8.0.0
• dfa6369 release version 8.0.0
• b862cb1 update requirements
• f51584c Merge pull request #1876 from pallets/pre-commit-ci-schedule
• 804c71c update pre-commit monthly
• ac655f8 Merge pull request #1872 from janLuke/fix/formatter_write_text
• dcd991d HelpFormatter.write_text uses full width
• 5215fc1 Merge pull request #1870 from AdrienPensart/allow_colors_in_metavar
• e3e1691 repr is erasing ANSI escapes codes
• 482e6e6 Merge pull request #1875 from pallets/pre-commit-ci-update-config
• Additional commits viewable in compare view

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