Mistakes SAS log for headings

[Jing-KI]

When using SASpy and the sas_kernel, the output from the log is mistaken as a heading.

This is not the case in the TOC2 extension for jupyter notebook.

[Jing-KI]

@kgryte Hey! This should be an easy fix to ignore output cells. Any chance this could be implemented?

[kgryte]

@jingmeb Output cells were intentionally not ignored by default. Users specifically asked for including output cells for purposes of report generation.

If you want the ability to ignore output cells, you could add support for toggling such behavior via an advanced setting. Feel free to submit a PR to this end.