.travis.yml: Attempt testing using `conda`.
.travis.yml: Attempt testing using `conda`.

CellProfiler/python-javabridge,CellProfiler/python-javabridge,CellProfiler/python-javabridge,jakirkham/python-javabridge,CellProfiler/python-javabridge,jakirkham/python-javabridge,jakirkham/python-javabridge,jakirkham/python-javabridge