Strict package requirements

Author: dlfivefifty

Project.toml

@@ -18,9 +18,9 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
-BandedMatrices = "≥ 0.9.0"
-BlockArrays = "≥ 0.8.0"
+BandedMatrices = "0.9.0"
+BlockArrays = "0.8.0"
 FillArrays = "≥ 0.5.0"
-LazyArrays = "≥ 0.7.1"
+LazyArrays = "0.8.0"
 MatrixFactorizations = "≥ 0.0.4"
 julia = "≥ 0.7.0"