Add MANIFEST.in to ship extra files

Signed-off-by: Mark Hymers <mark.hymers@ynic.york.ac.uk>
1 job for 6-automatically-build-python-source-packages-and-wheels in 8 minutes and 25 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build Test
passed #1656
build_test

00:08:25