Aioftp

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- client: add base `LIST` parsing
- client: add `client.list` fallback on `MLSD` «not implemented» status code to `LIST`
- client: add `client.stat` fallback on `MLST` «not implemented» status code to `LIST`
- common: add `setlocale` context manager for `LIST` parsing, formatting and thread-safe usage of locale
- server: add `LIST` support for non-english locales
- server: fix `PASV` sequencies before data transfer (latest `PASV` win)
Thanks to `jw4js <https://github.com/jw4js>`_, `rsichny <https://github.com/rsichny>`_

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- `stream.read` will read whole data by default (as `asyncio.StreamReader.read`)
Thanks to `sametmax <https://github.com/sametmax>`_

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- replace `docopt` with `argparse`
- add `syst` server command
- improve client `list` documentation
Thanks to `thelostt <https://github.com/thelostt>`_, `yieyu <https://github.com/yieyu>`_

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- fix documentation main page client example

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- fix `modifed time` field for `list` command result
- add `ClientSession` context
- add `REST` command to server and client
Thanks to `rsichny <https://github.com/rsichny>`_

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- change development status to production/stable
- add configuration to restrict port range for passive server
- build LIST string with stat.filemode
Thanks to `rsichny <https://github.com/rsichny>`_