Create environment file that contains the entire flatsurf stack

[saraedum]

and update our installation instructions (and also explain how to reinstall everything safely.)

name: flatsurf
channels:
  - conda-forge
  - defaults
dependencies:
  - gap-defaults
  - ipywidgets
  - matplotlib-base
  - pip
  - pytest
  - pytest-xdist
  - sagelib>=8.8
  # sagelib<9.2 does not explicitly install libiconv which is needed in lots of places.
  - libiconv
  - scipy
  - surface-dynamics>=0.4.7,<0.5
  - pyeantic>=1,<2
  - pyexactreal>=2,<3
  - pyflatsurf>=3.10.1,<4  #112 
  - ruamel.yaml
  - sage-flatsurf >=0.4.4,<0.5
  - pip:
    - ipyvue-async >=0.1.0,<0.2
    - ipyvue >=1.5.0,<2
    - jupyter_ui_poll >=0.2.1,<0.3
    - flipper
    - ipyvue-flatsurf

[saraedum]

ipyvue-flatsurf is missing from this list.

[saraedum]

The installation instructions now explain this.