added support for downsampling factor 0 to skip power profiling data completely
minor change: use integer for duration value of powerprofiling config in xmlconfig

temporary workaround to disable BokehDeprecationWarning

cleanup rocketlogger import
removed print of input path for visualization

* added license info to package metadata

moved get_dt_addr_to_var_map to flocklab.py
fixed serial2Df (use correct path & properly handle serial logs which contain carriage returns)

updated version number

use same color for same variable for all nodes for datatrace plotting
change datatrace plot style to Step

minor cleanup

added circle markers to datatrace plots
cleanup of bokeh imports and old method to display absolute time in hover info