* Add sync versions of stream and save methods
In order to provide synchronous interface to the library
* Fix save_sync() failing to use metadata_fname and fix typing issues
Signed-off-by: rany <ranygh@riseup.net>
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Signed-off-by: rany <ranygh@riseup.net>
Co-authored-by: rany <ranygh@riseup.net>
