Merge pull request #828 from adamarla/master

Added codex
Do NOT write fractions as mixed fractions by default
Merge pull request #829 from abhinavc/master

Changed default to \WRITEFRAC
4/cnh part 2
Merge pull request #830 from abhinavc/master

4/cnh part 2
4/enh part 1
Merge pull request #831 from abhinavc/master

4/enh part 1
New .eps file
Merge pull request #832 from abhinavc/master

New .eps file for 1/81h/v9zz2
Minor edit to plotly.eps
Merge pull request #833 from abhinavc/master

1/81h/v9zz2 eps changes
Continue generating pg-*.jpg in vault/

The jpegs are 405x smaller than the pngs and therefore download quicker.

JPEGs should be used primarily on the website.
On mobile, the image should be sharper to compensate for the smaller screen size.
And hence, use PNGs.
Merge pull request #834 from abhinavc/master

Continue generating pg-*.jpg in vault/
Graph made using plotly
Merge pull request #835 from abhinavc/master

1/81h/31103 graph using plotly
\FRACPOWER works with negative integral powers too
Use gc* variable names to avoid name conflict
Class 9 log question
Merge pull request #836 from abhinavc/master

First question on Class 9 log
[cron-git-commit] @ 19.33