gitnu 0.2.0

gitnu indexes your git status so you can use numbers instead of filenames.
Documentation 
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On branch main
Changes to be committed:
1	new file:   file_0003
2	new file:   src/emerald
3	new file:   src/ruby

Untracked files:
4	file_0001
5	file_0002
6	src/sapphire