@Andarist why are you converting all callbags from module.exports to export default?

It's not the same, and it causes problems when exporting them like callbag-basics does:
module.exports = {
forEach: require('callbag-for-each'),
fromObs: require('callbag-from-obs'),
fromIter: require('callbag-from-iter'),
fromEvent: require('callbag-from-event'),
fromPromise: require('callbag-from-promise'),
interval: require('callbag-interval'),
map: require('callbag-map'),
scan: require('callbag-scan'),
flatten: require('callbag-flatten'),
take: require('callbag-take'),
skip: require('callbag-skip'),
filter: require('callbag-filter'),
merge: require('callbag-merge'),
concat: require('callbag-concat'),
combine: require('callbag-combine'),
share: require('callbag-share'),
pipe: require('callbag-pipe'),
startWith: require('callbag-start-with') // Doesn't work.
};