ci: sync configuration with pymplate

refactor load method to allow for easier mocking with pyfakefs (#57)

Added support for open clock dates

Ensure input file is closed within load()

update ci config

fix regression in orgparse.load method for file-like objects

broken in 3067189

see #32

only split filetags by ':'

fix: py.typed typo

treat filetags as tags + make file properties case insensitive

Merge pull request #20 from karlicoss/ci

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