chore(release): publish [skip ci]

- @ohif/extension-cornerstone@0.50.5
 - @ohif/extension-dicom-html@0.50.4
 - @ohif/extension-vtk@0.50.7
 - @ohif/ui@0.50.4
 - @ohif/viewer@0.50.20

extensions/dicom-html/CHANGELOG.md

@@ -3,6 +3,17 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [0.50.4](https://github.com/OHIF/Viewers/compare/@ohif/extension-dicom-html@0.50.3...@ohif/extension-dicom-html@0.50.4) (2019-09-06)
+
+
+### Bug Fixes
+
+* set NODE_ENV for production build ([9120db4](https://github.com/OHIF/Viewers/commit/9120db4))
+
+
+
+
+
 ## [0.50.3](https://github.com/OHIF/Viewers/compare/@ohif/extension-dicom-html@0.50.2...@ohif/extension-dicom-html@0.50.3) (2019-09-04)
 
 **Note:** Version bump only for package @ohif/extension-dicom-html