Update list of excluded files.

.gitignore

-models/initial-condition-*.inc
-models/terminal-condition-*.inc
-
-models/m*-done.info
-
-models/m10/*
-models/+m10/*
-models/m10ss/*
-models/+m10ss/*
-
-models/m20/*
-models/+m20/*
-models/m20ss/*
-models/+m20ss/*
-
-models/m30/*
-models/+m30/*
-models/m30ss/*
-models/+m30ss/*
-
-*.ipynb
-*.log
+examples/*.log
+examples/*.aux
+examples/*.pdf
+examples/*.png
+examples/*.mat
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