chore(release): publish [skip ci]

- @ohif/extension-cornerstone@1.4.0
 - @ohif/extension-vtk@0.52.21
 - @ohif/core@1.6.0
 - @ohif/ui@0.57.0
 - @ohif/viewer@2.1.0

extensions/vtk/CHANGELOG.md

@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [0.52.21](https://github.com/OHIF/Viewers/compare/@ohif/extension-vtk@0.52.20...@ohif/extension-vtk@0.52.21) (2019-10-26)
+
+**Note:** Version bump only for package @ohif/extension-vtk
+
+
+
+
+
 ## [0.52.20](https://github.com/OHIF/Viewers/compare/@ohif/extension-vtk@0.52.19...@ohif/extension-vtk@0.52.20) (2019-10-26)
 
 **Note:** Version bump only for package @ohif/extension-vtk

extensions/vtk/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ohif/extension-vtk",
-  "version": "0.52.20",
+  "version": "0.52.21",
   "description": "OHIF extension for VTK.js",
   "author": "OHIF",
   "license": "MIT",
@@ -52,8 +52,8 @@
     "react-vtkjs-viewport": "^0.3.7"
   },
   "devDependencies": {
-    "@ohif/core": "^1.5.2",
-    "@ohif/ui": "^0.56.1",
+    "@ohif/core": "^1.6.0",
+    "@ohif/ui": "^0.57.0",
     "cornerstone-tools": "^4.0.9",
     "cornerstone-wado-image-loader": "^3.0.0",
     "dcmjs": "^0.6.1",