Squashed 'themes/bear/' changes from fe37fcf..d10630d

Merge branch 'main' into microformats2

Merge branch 'main' into microformats2

Merge branch 'main' into microformats2

Merge branch 'main' into microformats2

Move header/footer/main elements into child templates

Remove trailing slashes on void elements

Sorry Terry, you'll have to go

Remove commented-out colour

Move images to root

Move images to root

Reformat templates

Make date format configurable

Cleanup whitespace

Fix lang attribute

Crudely enable external nav menu links

Don't reverse the order of pages

Show screenshots in readme

Update screenshots

%s/Hugo/Zola/g

Update theme links

Fix demo site base_url

Add screenshots

Add menu instructions to readme

Ignore build output

Add readme and license

Initial commit

Move header/footer/main elements into child templates

Use relative font sizes

Remove duplicate header in demo content

Improve whitespacing in HTML

Fix spacing of code examples