Libsass

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Released on June 7, 2017.

- Use ``getfullargspec`` when available in python 3. [:issue:`188` by
Thom Wiggers]
- Use ``sass_copy_c_string`` instead of ``strdup`` for portability
[:issue:`196` by Anthony Sottile]
- Use ``-std=gnu++0x`` to fix installation under cygwin [:issue:`195`
:issue:`197` by Anthony Sottile]
- Correct source map url [:issue:`201` :issue:`202` by Anthony Sottile]
- Remove ``--watch`` [:issue:`203` by Anthony Sottile]
- Follow up the libsass upstream: 3.4.4 --- See the release notes of LibSass
3.4.4__. [:issue:`205` by Anthony Sottile]

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Released on January 7, 2017.

- Follow up the libsass upstream: 3.4.3 --- See the release notes of LibSass
3.4.3__. [:issue:`178` by Anthony Sottile]

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Released on January 5, 2017.

- Follow up the libsass upstream: 3.4.2 --- See the release notes of LibSass
3.4.2__. [:issue:`176` by Anthony Sottile]

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Released on December 20, 2016.

- Follow up the libsass upstream: 3.4.1 --- See the release notes of LibSass
3.4.1__. [:issue:`175` by Anthony Sottile]

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Released on December 10, 2016.

- Follow up the libsass upstream: 3.4.0 --- See the release notes of LibSass
3.4.0__. [:issue:`173` by Anthony Sottile]

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Released on October 24, 2016.

- Drop support for python2.6 [:issue:`158` by Anthony Sottile]
- Deprecate ``--watch`` [:issue:`156` by Anthony Sottile]
- Preserve line endings [:issue:`160` by Anthony Sottile]
- Follow up the libsass upstream: 3.3.6 --- See the release notes of LibSass
3.3.6__. [:issue:`167` by Anthony Sottile]