Add parallel run functionality and calibration tool
[x] Parallel functionality added
[x] Calibration functionality added
[x] Tests added
[x] Documentation added
[x] Example added (in the documentation, to an existing notebook, or in a new notebook)
[x] Description in CHANGELOG.rst added (single line such as: (`#XX <https://github.com/ciceroOslo/ciceroscm/pull/XX>`_) Added feature which does something)
Add parallel run functionality and calibration tool
CHANGELOG.rstadded (single line such as:(`#XX <https://github.com/ciceroOslo/ciceroscm/pull/XX>`_) Added feature which does something)