Netzoopy

-------------------
- support for Python v3.9
- addition of DRAGON + unit tests +tutorial and many bug fixes that Daniel and Marouen have been doing as a user requests

------------------

- PANDA reads arguments as dataframes in addition to file paths
- changed condor ground truth to match output of `python-igraph 0.8.2 <https://github.com/netZoo/netZooPy/issues/82>`_.

------------------

- Major fix for OTTER behavior across platforms.

------------------

- new tool: OTTER
- unit test for OTTER
- fix for PANDA `force` field
- tweaks for compatibility of gpuPANDA with cupy

------------------------------

- Added gpuPANDA, which is a gpu-accelerated implementation of PANDA
- Added gpuLIONESS
- Added a gpuPANDA and gpuLIONESS tutorial
- Fixed condor dependency to python-igraph (still under investigation in 82 )

------------------

- sambar tutorial
- condor tutorial
- added 3.8 to Ubunutu test server (along with 3.6 and 3.7 )
- Created three options for data processing in PANDA.
- Union: adds rows for genes/TFs that are missing in at least one prior (expression, ppi, motif)
- Intersection: removes TF/genes that missing in at least one prior
- Legacy: previous data processing behavior
- The default was set to union in netZooM, netZooR, netZooPy as it is the default in netZooC.