bump plotly.js to 1.49.4 (#613)

Author: Marc-Andre-Rivet

CHANGELOG.md

@@ -6,9 +6,15 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 - Fixed problems with `Graph` components leaking events and being recreated multiple times if declared with no ID [#604](https://github.com/plotly/dash-core-components/pull/604)
 
+### Updated
+- Upgraded plotly.js to 1.49.4 [#612](https://github.com/plotly/dash-core-components/issues/612)
+  - Patch releases [1.49.4](https://github.com/plotly/plotly.js/releases/tag/v1.49.4), [1.49.3](https://github.com/plotly/plotly.js/releases/tag/v1.49.3), [1.49.2](https://github.com/plotly/plotly.js/releases/tag/v1.49.2)
+
+
 ## [1.1.1] - 2019-08-06
+### Updated
 - Upgraded plotly.js to 1.49.1 [#595](https://github.com/plotly/dash-core-components/issues/595)
-- Patch release [1.49.1](https://github.com/plotly/plotly.js/releases/tag/v1.49.1)
+  - Patch release [1.49.1](https://github.com/plotly/plotly.js/releases/tag/v1.49.1)
 
 ## [1.1.0] - 2019-08-05
 ### Changed

CONTRIBUTING.md

@@ -78,7 +78,7 @@ respectively. TODO:
 
 ## Updating Plotly.js
 
-1. Download the latest plotly.js from the cdn: `$ wget https://github.com/plotly/plotly.js/releases/tag/v1.49.1`
+1. Download the latest plotly.js from the cdn: `$ wget https://github.com/plotly/plotly.js/releases/tag/v1.49.4`
 2. Update `dash_core_components/__init__.py` plotly.js `external_url`
 3. Update `CHANGELOG.md` with links to the releases and a description of the changes. The message should state (see the existing `CHANGELOG.md` for examples):
     * If you're only bumping the patch level, the heading is "Fixed" and the text starts "Patched plotly.js". Otherwise the heading is "Updated" and the text starts "Upgraded plotly.js"

dash_core_components/__init__.py

@@ -42,8 +42,8 @@
 
 _js_dist = [
     {
-        'external_url': 'https://cdn.plot.ly/plotly-1.49.1.min.js',
-        'relative_package_path': 'plotly-1.49.1.min.js',
+        'external_url': 'https://cdn.plot.ly/plotly-1.49.4.min.js',
+        'relative_package_path': 'plotly-1.49.4.min.js',
         'namespace': 'dash_core_components'
     },
     {