add @iromli's website to real world examples
ignore files included via @import SASS/SCSS/LESS

Only works for stylesheets where the @import clause is within the first
512 bytes. From now on, Acrylamid compiles assets per directory and
per extension in an independend process.
add developer requirements
PingBack for inline Markdown/reST links
jinja2 filter imports macros from theme/macros.html automatically

Avoids repetitive import statements for image galleries for example.
Fails silently when there is no macros.html.
import macros with context (access to env and conf)