Bump compat to JuMP 1.0 (#47)

Author: odow

Project.toml

@@ -1,7 +1,7 @@
 name = "PiecewiseLinearOpt"
 uuid = "0f51c51e-adfa-5141-8a04-d40246b8977c"
 repo = "https://github.com/joehuchette/PiecewiseLinearOpt.jl.git"
-version = "0.4.1"
+version = "0.4.2"
 
 [deps]
 JuMP = "4076af6c-e467-56ae-b986-b466b2749572"
@@ -10,7 +10,8 @@ MathOptInterface = "b8f27783-ece8-5eb3-8dc8-9495eed66fee"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
-JuMP = "0.23"
+Cbc = "1"
+JuMP = "0.23, 1"
 MathOptInterface = "1"
 julia = "1.6"