notebooks/examp_plotting_split_axes_vertically.ipynb: Added example notebook for splitting axes vertically using pyic.split_axes_vertically.

pyicon/pyicon_plotting.py: Added Class split_axes_vertically which allows to easily split axes in the vertical.

pyicon/pyicon_tb.py: Added function asses_memory which should give an overview of the memory used by xarray objects.

pyicon/pyicon_plotting.py: Fixed bug which occurred in new Matplotlib version 3.4.2: Changed how position is set in arrange_axes since position argument was not recognized anymore in latest matplotlib version. Added shading='nearest' to avoid new matplotlib warning in shade/pcolormesh.

quickplots/qp_driver.py: Bug fix: Allow to path fpath_tgrid directly instead of overwriting it by some smart or not so smart automatization.

pyicon_calc.py: New and quicker version to derive bstr. It does not seem to work properly yet and needs to be better tested. Therfore switched off as default.

pyicon_tb.py: Added option to specify in time_average which file is picked to identify dimensions for averaging.

pyicon/quickplots/pyicon_quickplots.py: Changed mappbale to hm and used hm[1] for contour labeling since labeling of contourf seems buggy and hm[1] which refers to contour should be used in stead.

pyicon/pyicon_tb.py: Added some potential candidate for another output function. However not in use yet.

run_qp_driver_*.sh: Changed path for source file to local version such that it is (hopefully) ensured that the each user uses its local pyicon version.