and fix it again

Oh my, like, this is the 5th implementation of ifelse we have here?

Project.toml

@@ -4,14 +4,15 @@ authors = ["Mirek Kratochvil <miroslav.kratochvil@uni.lu>", "LCSB R3 team <lcsb-
 version = "0.5.5"
 
 [deps]
+IfElse = "615f187c-cbe4-4ef1-ba3b-2fcf58d6d173"
 Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
 SBML_jll = "bb12108a-f4ef-5f88-8ef3-0b33ff7017f1"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 
 [compat]
-julia = "1.5"
 Symbolics = "0.1.21, 1"
+julia = "1.5"
 
 [extras]
 Downloads = "f43a241f-c20a-4ad4-852c-f6b1247861c6"

src/SBML.jl

@@ -3,6 +3,7 @@ module SBML
 using SBML_jll, Libdl
 using SparseArrays
 using Symbolics
+using IfElse
 
 include("types.jl")
 include("structs.jl")

src/symbolics.jl

@@ -60,7 +60,7 @@ function sbmlPiecewise(args...)
     if length(args) == 1
         args[1]
     elseif length(args) >= 3
-        Core.ifelse(args[2], args[1], sbmlPiecewise(args[3:end]...))
+        IfElse.ifelse(args[2], args[1], sbmlPiecewise(args[3:end]...))
     else
         throw(AssertionError("malformed piecewise SBML function"))
     end