Merge pull request python3statement#142 from CAM-Gerlach/use-https-urls

Use HTTPS URLs for projects and other links where available

Author: mscuthbert

_sections/30-projects.md

@@ -10,40 +10,40 @@ style: center
 
 These projects pledge to drop Python 2 support in or before 2020.
 
-- [![](assets/pandas.png)pandas](http://pandas.pydata.org/)
+- [![](assets/pandas.png)pandas](https://pandas.pydata.org/)
 - [![](assets/ipython.png)IPython](https://ipython.org)
 - [![](assets/mitmproxy.png)mitmproxy](https://mitmproxy.org/)
 - [![](assets/kivy.png)Kivy](https://kivy.org/)
-- [![](assets/matplotlib.png)Matplotlib](http://matplotlib.org/)
-- [![](assets/numpylogoicon.svg)NumPy](http://numpy.org)
+- [![](assets/matplotlib.png)Matplotlib](https://matplotlib.org/)
+- [![](assets/numpylogoicon.svg)NumPy](https://www.numpy.org/)
 - [![](assets/zulip.png)Zulip](https://zulip.org)
-- [![](assets/sympy.png)SymPy](http://www.sympy.org/)
+- [![](assets/sympy.png)SymPy](https://www.sympy.org/)
 - [![](assets/jupyter.png)Jupyter notebook](https://jupyter.org)
 - [![](assets/scikit-image.png)Scikit Image](http://scikit-image.org/)
 - [![](assets/pymc3.png)PyMC3](https://github.com/pymc-devs/pymc3)
 - [![](assets/tensorpack.png)Tensorpack](https://github.com/tensorpack/tensorpack)
 - [![](assets/xonsh.png)xonsh](http://xon.sh)
-- [![](assets/astropy.png)Astropy](http://www.astropy.org/)
-- [![](assets/biopython.png)Biopython](http://biopython.org/)
+- [![](assets/astropy.png)Astropy](https://www.astropy.org/)
+- [![](assets/biopython.png)Biopython](https://biopython.org/)
 - [![](assets/pythran.png)Pythran](https://github.com/serge-sans-paille/pythran)
-- [![](assets/xarray.png)xarray](http://xarray.pydata.org/)
+- [![](assets/xarray.png)xarray](https://xarray.pydata.org/)
 - [![](assets/dateutil.png)dateutil](https://github.com/dateutil/dateutil)
-- [![](assets/tryton.png)Tryton](http://www.tryton.org/)
+- [![](assets/tryton.png)Tryton](https://www.tryton.org/)
 - [![](assets/pystan.png)PyStan](https://github.com/stan-dev/pystan)
 - [![](assets/mne.png)MNE](https://www.martinos.org/mne/stable/index.html)
 - [![](assets/swcarpentry.png)Software Carpentry](https://software-carpentry.org)
 - [![](assets/skbio.png)scikit-bio](http://scikit-bio.org)
 - [![](assets/fecon235.png)fecon235](https://github.com/rsvp/fecon235)
-- [![](assets/sunpy.png)SunPy](http://sunpy.org)
+- [![](assets/sunpy.png)SunPy](https://sunpy.org/)
 - [![](assets/axelrod.png)Axelrod](https://github.com/Axelrod-Python/Axelrod)
 - [![](assets/rpy2_logo_64x64.png)rpy2](https://rpy2.bitbucket.io)
-- [![](assets/fenics.png)FEniCS](http://www.fenicsproject.org)
+- [![](assets/fenics.png)FEniCS](https://fenicsproject.org/)
 - [![](assets/rdkit.png)RDKit](https://github.com/rdkit/rdkit)
 - [![](assets/toyplot-256x256.png)Toyplot](https://github.com/sandialabs/toyplot)
 - [![](assets/metpy.png)MetPy](https://unidata.github.io/MetPy)
 - [![](assets/psi4square.png)Psi4](http://psicode.org/)
 - [![](assets/openquake.png)OpenQuake engine](https://github.com/gem/oq-engine)
-- [![](assets/yt.png)yt](http://yt-project.org)
+- [![](assets/yt.png)yt](https://yt-project.org/)
 - [![](assets/cmd2.png)cmd2](https://github.com/python-cmd2/cmd2)
 - [![](assets/osbrain.png)osBrain](https://github.com/opensistemas-hub/osbrain)
 - [![](assets/pymeasure.png)PyMeasure](https://github.com/ralph-group/pymeasure)

_sections/50-why.md

@@ -11,11 +11,11 @@ style: center
 Here are some resources on why Python 3 was created, and how and why to update
 code to use Python 3:
 
-- [Why Python 3 exists](http://www.snarky.ca/why-python-3-exists) (Brett Cannon)
+- [Why Python 3 exists](https://snarky.ca/why-python-3-exists/) (Brett Cannon)
 - [How to add Python 3 support to your code](https://docs.python.org/3/howto/pyporting.html)
 - [Python FAQ: Why should I use Python 3?](https://eev.ee/blog/2016/07/31/python-faq-why-should-i-use-python-3/) (lexy munroe)
 - [Python FAQ: How do I port to Python 3?](https://eev.ee/blog/2016/07/31/python-faq-how-do-i-port-to-python-3/) (lexy munroe)
-- [Stop supporting Python 2.6 for free](http://www.curiousefficiency.org/posts/2015/04/stop-supporting-python26.html) (Nick Coghlan)
-- [Why Python 4.0 won't be like Python 3.0](http://www.curiousefficiency.org/posts/2014/08/python-4000.html) (Nick Coghlan)
+- [Stop supporting Python 2.6 for free](https://www.curiousefficiency.org/posts/2015/04/stop-supporting-python26.html) (Nick Coghlan)
+- [Why Python 4.0 won't be like Python 3.0](https://www.curiousefficiency.org/posts/2014/08/python-4000.html) (Nick Coghlan)
 - [Python 3 for scientists](https://python-3-for-scientists.readthedocs.io/en/latest/)
 - [scikit-bio py3-only RFC](https://github.com/biocore/scikit-bio-rfcs/blob/master/accepted/002-py3-only.md)