Merge pull request #100 from SciML/compathelper/new_version/2022-12-15-00-10-14-587-01889485633

CompatHelper: add new compat entry for IntervalArithmetic at version 0.20, (keep existing compat)

Author: ChrisRackauckas

Project.toml

@@ -31,3 +31,6 @@ StatsPlots = "f3b207a7-027a-5e70-b257-86293d7955fd"
 Sundials = "c3572dad-4567-51f8-b174-8c6c989267f4"
 Traceur = "37b6cedf-1f77-55f8-9503-c64b63398394"
 Weave = "44d3d7a6-8a23-5bf8-98c5-b353f8df5ec9"
+
+[compat]
+IntervalArithmetic = "0.20"