Switch to lrdf.tsv suffix from df.tsv and compatibility with matplotlib

Switch to lrdf.tsv suffix from df.tsv

This is for better integration with lrdf:
https://github.com/ahcm/lrdf
Which is implemented in Rust and creates the same dataframe but faster.

Compatibility with matplotlib

Some plotting had API updates. And seaborn styler has a different name.
matplotlib 3.6.1 has a bug breaking seaborn, crashing the plotting.
So avoid that version.-

Don't write index column to df.tsv

This makes the df.tsv slightly incompatibly.
Old df.tsv can be converted by deleting the the first column, e.g. with cut -f 2-12 df.tsv.

Don't write index column to df.tsv

This makes the df.tsv slightly incompatibly.
Old df.tsv can be converted by deleting the the first column, e.g. with cut -f 2-12 df.tsv.

Speed improvements

Improved performance

Fix spelling

0.4.1

Update example image

First release version

0.4.0

Bump version to 0.4.0. Use colorblind theme.