Use matplotlib instead of matplotlib-base in run.txt - discussion on assign packages

[bobleesj]

The latest rc version of pdfgui contains run.txt which contains matplotlib-base.

This PR fixes the following:

pip install diffpy.pdfgui==3.1.0rc5

ERROR: Could not find a version that satisfies the requirement matplotlib-base (from diffpy-pdfgui) (from versions: none)
ERROR: No matching distribution found for matplotlib-base

Closes #207 - tested that run.txt dependencies are installed during pip install.

[bobleesj]

@sbillinge ready for review

[bobleesj]

@sbillinge will make a new general PR based on today's discussion

• conda.txt for all conda dependencies for our CI to run conda install --file requirements/...
• pip.txt for all pip dependencies required for pip install <package>

[sbillinge]

I am afraid this means we will have to update all documentation and readmes as well. Not sure if it is more work to share this around or just do it. In general, it might be good to assigne packages to people, and whenever there is a task like this, we send a general slack saying "please update your packages by Friday" and everyone knows what it means. We will have to assign packages to new people when old people leave....

[bobleesj]

@sbillinge Indeed, these are the current chefs now:

• diffpy.pdfmorph | Andrew
• diffpy.srmise | Steven
• diffpy.labpdfproc | Yucong
• diffpy.fourigui | Caden
• diffpy.utils |
• diffpy.structure |
• diffpy.pdfgui |
• diffpy.srfit |
• diffpy.snmf |
• bg-mpl-stylesheets |
• †diffpy.pdffit2 |
• †diffpy.srreal |
• diffpy.nmf_mapping |

Next week, perhaps we can sit down and assign each member have 2 packages (also include Tieqiong) and also have new members take on one or two for training as well?