Update bound

Author: YingboMa

Project.toml

@@ -66,7 +66,7 @@ Setfield = "0.7"
 SpecialFunctions = "0.7, 0.8, 0.9, 0.10, 1.0"
 StaticArrays = "0.10, 0.11, 0.12, 1.0"
 SymbolicUtils = "0.10"
-Symbolics = "0.1.12"
+Symbolics = "0.1.14"
 UnPack = "0.1, 1.0"
 Unitful = "1.1"
 julia = "1.2"