added fastshermanmorrison and took out pypolychord. runs bjorn's exam…

…ple script with natsort removed from imports

anaconda-env_gwafix.yml

@@ -0,0 +1,84 @@
+name: IPTA_Env
+channels:
+  - conda-forge
+  - defaults
+  - demorest
+dependencies:
+  - python=3.9
+  - pip
+  - mkl
+  - jupyter
+  - ca-certificates
+  - certifi
+  - openssl
+  - libblas[build=*mkl]
+  - tempo2
+  - matplotlib
+  - astropy
+  - bokeh
+  - bottleneck
+  - dask
+  - h5py
+  - imagecodecs
+  - imageio
+  - ipympl
+  - numba
+  - numexpr
+  - pandas
+  - patsy
+  - pyerfa
+  - pytables
+  - pywavelets
+  - scikit-image
+  - scikit-learn
+  - scikit-sparse
+  - scipy
+  - seaborn
+  - seaborn-base
+  - statsmodels
+  - tifffile
+  - vincent
+  - yt
+  - gmp
+  - mpfr
+  - nose
+  - suitesparse
+  - ptmcmcsampler
+  - wand
+  - marshmallow
+  - cython
+  - healpy
+  - jplephem
+  - ephem
+  - corner
+  - pyyaml
+  - ruamel.yaml
+  - pytest
+  - docutils
+  - pytest-xdist
+  - psrchive
+  - psrqpy
+  - libstempo
+  - pint-pulsar>=0.9
+  - mpi4py
+  - enterprise-pulsar
+  - enterprise_outliers
+  - enterprise_extensions
+  - astroquery
+  - pandas
+  - pgplot
+  - pint-pal>=0.1.0
+  - pymultinest>=2.11
+  - acor>=1.1.1
+  - pypulse>=0.1.1
+  - gitpython
+  - bilby
+  - pip:
+    # - git+https://github.com/PolyChord/PolyChordLite@master
+    - git+https://github.com/pennucci/PulsePortraiture.git@py3
+    - git+https://github.com/bvgoncharov/enterprise_warp
+    - git+https://github.com/nanograv/pint_pal@main
+    - git+https://github.com/nanograv/enterprise@dev
+    - git+https://github.com/nanograv/enterprise_extensions@dcbusyweek
+    - git+https://github.com/vallis/libstempo.git
+    - fastshermanmorrison-pulsar