update for latest stylint config

Merge branch 'master' into v0.2.3

Merge pull request just-the-docs#69 from bmann/patch-1

page layout also used out of the box by Jekyll

Bump JTD version numbers

update docs for nav / page strucutre

Merge pull request just-the-docs#19 from pmarsceill/task-lists

Task lists

Merge pull request just-the-docs#13 from pmarsceill/add-ci

Add CI for testing

Just the Docs build packaging cleanup

Just the Docs build packaging cleanup

Just the Docs build packaging cleanup