Percolate glozz format settings from write
glozz cut --format

I'm a bit unhappy about there being STAC-specific things here
but it's fairly minor (just controlling the order that features
etc are emitted)
glozz tidy up
Move glozz linebreak code to educe.internalutil
glozz utility: import normalise feature from Stac
Export stac unannotated write settings.
API change: educe.glozz.hashcode takes file object

Now you can pass in either bytestrings via StringIO or files
(but you have to apen them first)