Build wheels for release

[tomalrussell]

It would be nice to have pre-built wheels on PyPI, so end users don't need to compile and SWIG to install OpenUDM.

For reference, pip install openudm without swig installed gives:

Stack trace

Collecting openudm
  Downloading openudm-1.0.3.tar.gz (1.6 MB)
     |████████████████████████████████| 1.6 MB 1.5 MB/s 
Building wheels for collected packages: openudm
  Building wheel for openudm (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: ~/miniconda3/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-o25gsshg/openudm/setup.py'"'"'; __file__='"'"'/tmp/pip-install-o25gsshg/openudm/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-3bbe0fu5
       cwd: /tmp/pip-install-o25gsshg/openudm/
  Complete output (18 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-x86_64-3.7
  creating build/lib.linux-x86_64-3.7/openudm
  copying openudm/MultiCriteriaEval.py -> build/lib.linux-x86_64-3.7/openudm
  copying openudm/__init__.py -> build/lib.linux-x86_64-3.7/openudm
  copying openudm/__main__.py -> build/lib.linux-x86_64-3.7/openudm
  copying openudm/CellularModel.py -> build/lib.linux-x86_64-3.7/openudm
  copying openudm/RasterToolkit.py -> build/lib.linux-x86_64-3.7/openudm
  copying openudm/DevZones.py -> build/lib.linux-x86_64-3.7/openudm
  running build_ext
  building 'openudm._CellularModel' extension
  swigging openudm/CellularModel.i to openudm/CellularModel_wrap.cpp
  swig -python -c++ -o openudm/CellularModel_wrap.cpp openudm/CellularModel.i
  unable to execute 'swig': No such file or directory
  error: command 'swig' failed with exit status 1
  ----------------------------------------
  ERROR: Failed building wheel for openudm
  Running setup.py clean for openudm
Failed to build openudm
Installing collected packages: openudm
    Running setup.py install for openudm ... error
    ERROR: Command errored out with exit status 1:
     command: ~/miniconda3/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-o25gsshg/openudm/setup.py'"'"'; __file__='"'"'/tmp/pip-install-o25gsshg/openudm/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-mfg5kzdg/install-record.txt --single-version-externally-managed --compile --install-headers ~/miniconda3/include/python3.7m/openudm
         cwd: /tmp/pip-install-o25gsshg/openudm/
    Complete output (18 lines):
    running install
    running build
    running build_py
    creating build
    creating build/lib.linux-x86_64-3.7
    creating build/lib.linux-x86_64-3.7/openudm
    copying openudm/MultiCriteriaEval.py -> build/lib.linux-x86_64-3.7/openudm
    copying openudm/__init__.py -> build/lib.linux-x86_64-3.7/openudm
    copying openudm/__main__.py -> build/lib.linux-x86_64-3.7/openudm
    copying openudm/CellularModel.py -> build/lib.linux-x86_64-3.7/openudm
    copying openudm/RasterToolkit.py -> build/lib.linux-x86_64-3.7/openudm
    copying openudm/DevZones.py -> build/lib.linux-x86_64-3.7/openudm
    running build_ext
    building 'openudm._CellularModel' extension
    swigging openudm/CellularModel.i to openudm/CellularModel_wrap.cpp
    swig -python -c++ -o openudm/CellularModel_wrap.cpp openudm/CellularModel.i
    unable to execute 'swig': No such file or directory
    error: command 'swig' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: ~/miniconda3/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-o25gsshg/openudm/setup.py'"'"'; __file__='"'"'/tmp/pip-install-o25gsshg/openudm/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-mfg5kzdg/install-record.txt --single-version-externally-managed --compile --install-headers ~/miniconda3/include/python3.7m/openudm Check the logs for full command output.

[fmcclean]

Hi @tomalrussell, I did try this but it turns out that pre-building binary wheels for Linux is not simple - https://www.python.org/dev/peps/pep-0513/#rationale. Have a look at the manylinux branch for my attempts. We could possibly release binaries for Windows only?