Support DataStructures v0.19, bump patch version (#286)

Looks like your compathelper is not running so this is just a manual PR, haven't checked tests

Author: cgarling

Project.toml

@@ -1,7 +1,7 @@
 name = "ImageFiltering"
 uuid = "6a3955dd-da59-5b1f-98d4-e7296123deb5"
 author = ["Tim Holy <tim.holy@gmail.com>", "Jan Weidner <jw3126@gmail.com>"]
-version = "0.7.11"
+version = "0.7.12"
 
 [deps]
 CatIndices = "aafaddc9-749c-510e-ac4f-586e18779b91"
@@ -23,7 +23,7 @@ TiledIteration = "06e1c1a7-607b-532d-9fad-de7d9aa2abac"
 [compat]
 CatIndices = "0.2"
 ComputationalResources = "0.3"
-DataStructures = "0.17.7, 0.18"
+DataStructures = "0.17.7, 0.18, 0.19"
 FFTViews = "0.3"
 FFTW = "0.3, 1"
 ImageBase = "0.1.5"