Put actual compatibility upper bounds.

Project.toml

@@ -49,38 +49,38 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
 julia = "0.7, 1.0, 1.1"
-BenchmarkTools = ">= 0.4.3"
-CSV = ">= 0.5.14"
-Calculus = ">= 0.5.0"
-ClusterManagers = ">= 0.3.2"
-ColorTypes = ">= 0.8.0"
-DataFrames = ">= 0.19.4"
-DataStructures = ">= 0.17.5"
-DifferentialEquations = ">= 6.8.0"
-Distributions = ">= 0.21.7"
-FFTW = ">= 1.1.0"
-FileIO = ">= 1.0.7"
-ForwardDiff = ">= 0.10.6"
-FredData = ">= 0.3.1"
-GR = ">= 0.42.0"
-HDF5 = ">= 0.12.4"
-JLD2 = ">= 0.1.3"
-MbedTLS = ">= 0.6.8"
-Missings = ">= 0.4.3"
-ModelConstructors = ">= 0.1.4"
-Nullables = ">= 0.0.8"
-Optim = ">= 0.19.4"
-OrderedCollections = ">= 1.1.0"
-PDMats = ">= 0.9.10"
-Plots = ">= 0.27.0"
-RecipesBase = ">= 0.7.0"
-Roots = ">= 0.8.3"
-SMC = ">= 0.1.4"
-SpecialFunctions = ">= 0.8.0"
-StateSpaceRoutines = ">= 0.2.0"
-StatsBase = ">= 0.32.0"
-StatsFuns = ">= 0.9.0"
-StatsPlots = ">= 0.12.0"
+BenchmarkTools = "^0.4.3"
+CSV = "^0.5.14"
+Calculus = "^0.5.0"
+ClusterManagers = "0.3.2, 0.4.0"
+ColorTypes = "^0.8.0"
+DataFrames = "^0.19.4"
+DataStructures = "^0.17.5"
+DifferentialEquations = "^6.8.0"
+Distributions = "^0.21.7"
+FFTW = "^1.1.0"
+FileIO = "^1.0.7"
+ForwardDiff = "^0.10.6"
+FredData = "^0.3.1"
+GR = "0.42.0, 0.44.0"
+HDF5 = "^0.12.4"
+JLD2 = "^0.1.3"
+MbedTLS = "^0.6.8"
+Missings = "^0.4.3"
+ModelConstructors = "^0.1.4"
+Nullables = "^0.0.8"
+Optim = "^0.19.4"
+OrderedCollections = "^1.1.0"
+PDMats = "^0.9.10"
+Plots = "^0.27.0"
+RecipesBase = "^0.7.0"
+Roots = "^0.8.3"
+SMC = "^0.1.4"
+SpecialFunctions = "^0.8.0"
+StateSpaceRoutines = "^0.2.0"
+StatsBase = "^0.32.0"
+StatsFuns = "^0.9.0"
+StatsPlots = "^0.12.0"
 
 [extras]
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"