Rename pdf to pdf1.
Add pdf2
first commit
first commit
first commit
delete file
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first commit
Merge remote-tracking branch 'origin/oop' into dev

Conflicts:
	modules/cube.py
Merge branch 'master' into dev
merge from separate dev branch
merge from separate dev branch
first commit
- add healpix multiplication factor
- add more general additional header parameter
- remove some notes
fix overlap in frequency channel