MATSim writes a number of statistics into the output-directory. Some of them were written as tab-separated files with the file-suffix .txt. As CSV-files are a better standard for tabular data, the following output-files were changed from tab-separated txt-files to CSV in this PR:

• modestats.txt → modestats.csv
• ph_modestats.txt → ph_modestats.csv
• pkm_modestats.txt → pkm_modestats.csv
• scorestats.txt → scorestats.csv
• stopwatch.txt → stopwatch.csv
• traveldistancestats.txt → traveldistancestats.csv