Tutorial examples

[ots22]

• rationalize current tutorials: split first part out
• add short set-mode tutorial
• add smaller data set and use this with the examples that currently use the large dataset: can add a link to the large dataset, and perhaps commented-out notebook cell that uses it

[ots22]

Roy's comments:

Solution
I think it would be better to insert solution images at the relevant points of the notebook (as is already done for igr_result = igr(df[igr_columns], gaps), rather than adding them in interactive form at the end, which forces users to scroll back and forth, and interact with yet more things rather than just compare what they have with the solution.

Put description before code, rather than splitting it before/afterwards,e.g., as currently the case for PlotSession()

Put the Green boxes above the relevant code, not sometimes above and at other times below.

Add comments to clearly distinguish between cells that users must run vs. cells that provide additional background info, e.g., help(igr).

[layik]

I wonder if the two Example notebooks by Roy addresses this ticket @ots22? Or should we close it in favour of #58? Certainly "short set-mode tutorial" is in there.