remove full types from file loading

[ffreyer]

TODO

• [x] #89
• [x] #124 (via BufferedConfigRecorder which should probably replace the normal one but that'd be breaking?)
• [x] add a buffered config recorder (or replace the existing one) (i.e. in-memory buffer that gets cleared when it's full/loads the next chunk when needed)

closes #89 closes #124