Bump version and compat

Bumping version to 0.5.7
Bumping compat to Plots 0.29, Colors 0.12

Author: mfalt

Project.toml

@@ -2,7 +2,7 @@ name = "ControlSystems"
 uuid = "a6e380b2-a6ca-5380-bf3e-84a91bcd477e"
 authors = ["Dept. Automatic Control, Lund University"]
 repo = "https://github.com/JuliaControl/ControlSystems.jl.git"
-version = "0.5.6"
+version = "0.5.7"
 
 [deps]
 Colors = "5ae59095-9a9b-59fe-a467-6f913c188581"
@@ -20,12 +20,12 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
-Colors = "0.9.2, 0.10, 0.11"
+Colors = "0.9.2, 0.10, 0.11, 0.12"
 DSP = "0.6.1"
 DelayDiffEq = "5.6"
 IterTools = "1.0"
 LaTeXStrings = "1.0"
 OrdinaryDiffEq = "5.2"
-Plots = "0.24, 0.25, 0.26, 0.27, 0.28"
+Plots = "0.24, 0.25, 0.26, 0.27, 0.28, 0.29"
 Polynomials = "0.6.0"
 julia = "1.0"