Re-add description to feed.
Fix variable name.
Group dependencies by channel.
Catch errors when opening the archive.
Fix adding multiple dependencies.
Merge branch 'dependencies-by-channel' into production
Merge branch 'gzopen-error-handling' into production
Merge branch 'multiple-dependencies' into production
Link license to URL
Merge branch 'linked-license' into production
Make pirum executable.
Merge branch 'make-pirum-executable' into production
Display a nicer version name.
Reduce number of children() and count() calls.
Avoid expensive array_key_exists() calls.
Merge branch 'improve-build-performance' into production

Conflicts:
	pirum
Merge remote-tracking branch 'upstream/production' into performance

Conflicts:
	pirum