Version 0.1.6

• End time set by window creation always set to be smaller than maximum value in original data #15
• More intuitive names for pergola scripts options. Old ones are conserved to maintain backwards compatibility with older versions, #19
• Output file name can be set using -o, --output_file_name flag. When multiple input files are found, output files are named with an ordinal at the beginning, #20
• Version is set in pergola/_version.py and retrieve from there elsewhere, including the scripts (pergola_rules, jaaba_to_pergola and pergola_isatab). In this latter case using -v flag.
• Time shift and first phase can be set from pergola script. Implemented as --starting_phase and --shift options. Closes #22