Add git attributes for archival

.gitattributes: Add archival options to git attributes, which is a prerequisite for using setuptools-scm.

Add git attributes for archival
.gitattributes: Add archival options to git attributes, which is a prerequisite for using setuptools-scm.
d71854cd · David Runge · d1db709d · d71854cd
Verified Commit d71854cd authored Mar 28, 2021 by David Runge 🐿
--- a/.gitattributes
+++ b/.gitattributes
+.git_archival.txt  export-subst