Fixes  #469. We replace python3 exclusive code with a check for python3 and a compatibility fix. Note that the switch from os.set_nonblocking to fcntl.fcntl in 98d052d1 (fixing #503) also fixes python2 compatibility.

Change license text to LGPL-2.1

Bump attrs from 19.3.0 to 20.1.0

Bumps [attrs](https://github.com/python-attrs/attrs) from 19.3.0 to 20.1.0.
- [Release notes](https://github.com/python-attrs/attrs/releases)
- [Changelog](https://github.com/python-attrs/attrs/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/python-attrs/attrs/compare/19.3.0...20.1.0)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

allow Mux() flush/fill to work with python < 3.5

Bump pytest-cov from 2.10.0 to 2.10.1

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.10.0 to 2.10.1.
- [Release notes](https://github.com/pytest-dev/pytest-cov/releases)
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest-cov/compare/v2.10.0...v2.10.1)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Fixes: #503

Fix parse_hostport to always return string for host

This fixes #488 and provides an alternative solution for #489.

Add missing package in OpenWRT documentation

fix: require -r/--remote

This reverts commit 5debf1f1.

The package 'iptables-mod-extra' also needs to be installed

* Can't use this option twice, separate by comma actually.

* Broke the line because it was too long.

Bump pytest from 6.0.0 to 6.0.1

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.0.0 to 6.0.1.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest/compare/6.0.0...6.0.1)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Bump pytest from 5.4.3 to 6.0.0

Bumps [pytest](https://github.com/pytest-dev/pytest) from 5.4.3 to 6.0.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest/compare/5.4.3...6.0.0)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

README: add Ubuntu

Douglas Adams and Deep Thought was wrong, 42 is not the answer

Fix formatting in installation.rst

Fix formatting typos in usage docs

Add missing import

Fixes #474.

Restrict setuptools from executing on Python2

python_requires will be evaluated by setuptools to ensure the package is compatible
with currently active Python interpreter.

Reference: https://packaging.python.org/guides/distributing-packages-using-setuptools/#python-requires

Closes #470
Signed-off-by: Wilson Husin <wilsonehusin@gmail.com>

to prevent overwriting ports configured in ~/.ssh/config
if no port is specified, don't set the port explicitly to 22