Update Project.toml

Author: dpsanders

Project.toml

@@ -3,12 +3,12 @@ uuid = "138f1668-1576-5ad7-91b9-7425abbf3153"
 version = "0.12.1"
 
 [compat]
-IntervalArithmetic = 0.16, 0.17
-IntervalContractors = 0.4
-IntervalRootFinding = 0.5
-MacroTools = 0.5
-ModelingToolkit = 3
-julia = 1.3, 1.4
+IntervalArithmetic = "0.16, 0.17"
+IntervalContractors = "0.4"
+IntervalRootFinding = "0.5"
+MacroTools = "0.4, 0.5"
+ModelingToolkit = "3"
+julia = "1.3, 1.4"
 
 [deps]
 IntervalArithmetic = "d1acc4aa-44c8-5952-acd4-ba5d80a2a253"