Description of proposed changes

• smallbaselineApp.py: limit the number of parallel processes for plotting based on the max memory from the template file, to avoid exceeding the memory. Circle CI kills processes because of this. Note that matplotlib reserved much larger memory than it actually uses.

For users who want to use a lot of parallel processes for plotting, please increase your mintpy.compute.maxMemory setting. @falkamelung.

• view.py: add --memory option. Note this is NOT used in the smallbaselineApp.py

• plot.auto_multilook_num():

  • more detailed multilook num list, for more detailed memory management.
  • add max_memory arg to adjust according. Details are in the code comments.

• add quotes to the version control for conda/mamba install in the command line in docs/installation.md and .circleci/config.yml files

• circleci: use pip from conda to avoid warning msg

• docs/api/attributes.md: add EPSG (save_gdal.py does not work with hyp3 data #644)

Reminders

• Pass Codacy code review (green)
• Pass Circle CI / local test (green)
• Make sure that your code follows our style. Use the other functions/files as a basis.
• If modifying functionality, describe changes to function behavior and arguments in a comment below the function declaration.
• If adding new functionality, add a detailed description to the documentation and/or an example.