Re-introduce support for log-scale annotations

Remove support for logarithmic annotations

Fix the `text_util` resetting the scale to log

Add initial support for logarithmic scales when drawing annotations

Add more space between the axes and the footnote

Add support for the footnote

Add initial support for a footnote in the drawable

Update the version

Remove symlink

Update the readme with example visualizations

Add an example image to the slope graph documentation

Mention the slope graph and population chart in the documentation index

Add the population chart documentation

Update the population notebook

Update the slope graph example