csvgraph 2v7
Prints -3dB frequency for linear filter.
Display to user at least 1 example of every type of error in csv file (used to only display the first few errors found).
If dates are present on some lines of the csv file then flag lines without a date as a potential error when x column is set to date/time (these lines are still loaded in the same way as they were previoulsy).
New (exact) median (recursive median filter) algorithm, which falls back to sampling if the execution time becomes long. Median and Median 1 renamed as recursive median filter and standard median filter (see help/manual for more details on these median filters).