fix .gitignore file
Created by: woutdenolf
A pip install from source gives this
git status
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: edna2.egg-info/PKG-INFO
modified: edna2.egg-info/SOURCES.txt
modified: edna2.egg-info/requires.txt