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Bug Fixes
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* Allow `FileNotFound` exception for SSH config files.
* Fix startup error on MySQL < 5.0.22
* Check error code rather than message for Access Denied error
* Fix login with ~/.my.cnf files
Features
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* Add `-g` shortcut to option `--login-path`.
* Alt-Enter dispatches the command in multi-line mode.
* Allow to pass a file or FIFO path with --password-file when password is not specified or is failing (as suggested in this best-practice <https://www.netmeister.org/blog/passing-passwords.html>)
Internal
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* Remove unused function is_open_quote()
* Use importlib, instead of file links, to locate resources
* Test various host-port combinations in command line arguments
* Switched from Cryptography to pyaes for decrypting mylogin.cnf