OMpy v0.9

Many changes to the API have occured since v.0.2. Here a (incomplete) summary of the main changes:

• Vector and Matrix are now in mid-bin calibration. Most or all other functions have been adopted.
• Many changes (bugfix & readability) to the ensemble, decomposition and normalization classes.
• Normalization of nld and gsf ensembles working
• Parallelization, even though it could be more efficient for multinest (see #94 )
• Renamed response functions submodule; run git submodule update --init --recursive after git pull to get the new files
• remember to run pip install -e . such that changes to the cython files will be recompiled
• Documentation now available via https://ompy.readthedocs.io
• Installation requirements are hopefully all specified; docker file is provided with integration at https://hub.docker.com/r/oslocyclotronlab/ompy and mybinder can be used to rund the examples.
• We have clean-up the history of the repo to downsize it.
  Here the warning message: NB: Read this (only) if you have cloned the repo before October 2019: We cleaned the repository from old comits clogging the repo (big data files that should never have been there). Unfortunetely, this has the sideeffect that the history had to be rewritten: Previous commits now have a different SHA1 (git version keys). If you need anything from the previous repo, see ompy_Archive_Sept2019. This will unfortunately also destroy references in issues. The simplest way to get the new repo is to rerun the installation instructions below.