Squashed 'docs/' changes from f9a5dc59b..76e881257

Squashed 'docs/' changes from f9a5dc59b..76e881257

76e881257 Improve .Scratch entry (#454)
37ed09702 Remove zero-byte .gitmodules file altogether
943f21619 Add a note about valid values for taxonomies in front-matter
ebcfa30d7 Update definition list formatting
46050042a Corrected formatting
87c539101 Updated readFile documentation
8fd130395 commands: Regenerate the CLI docs
6ce0ce8d6 data: Regenereate the docshelper
9fe78fabd Release 0.39
33039c6ba releaser: Prepare repository for 0.40-DEV
e3a780907 releaser: Add release notes to /docs for release of 0.39
54406e3fa releaser: Bump versions for release of 0.39
21017660b Merge commit '047c4188dfc854f658d16f1e4a9501f9c97a31c7'

git-subtree-dir: docs
git-subtree-split: 76e88125760c140541edab2061aed31c6db2d800