copy everything in one go and parse them in the destination directory; easier than parsing each file and figuring out where to save it

instead of npm ci

get parser directives working again

no-widows is just shorter to write than prevent-widows

if content paths had just one extension, it would have always defaulted extensions to look for to 'html'; made it impossible to look for both html and md templates to compile, for example

support new project starter structure, with backwards compatibility

fixes #1384

it's redundant, nothing that could be used in an event happens before `beforeRender`, so that can be used instead

defaults to true, resolves css variables to their static representation all the time, not just when inlining css

no longer needed if we resolve all vars by default

resolve calc() functions throughout CSS, not just in inlined styles