manifest: speed up creation of the manifestdict
- fold iteration and rawset into parse
- avoid creating extra new strings with [:] where possible
- speed up node.bin
default = 'changelog'
header = header.tmpl
changelog = changelog.tmpl
changelogentry = changelogentry.tmpl
filelog = filelog.tmpl
filelogentry = filelogentry.tmpl
tags = tags.tmpl
tagentry = tagentry.tmpl