Sync Fork from Upstream Repo

.circleci/config.yml

@@ -79,6 +79,38 @@ jobs:
           command: 'cd packages/python/plotly; tox -e py37-core'
           no_output_timeout: 20m
 
+  python-3.7-percy:
+    docker:
+      - image: circleci/python:3.7-stretch-node-browsers
+        environment:
+          PERCY_ENABLED: True
+          PERCY_PROJECT: plotly/plotly.py
+
+    steps:
+      - checkout
+      - run:
+          name: Inject Percy Environment variables
+          command: |
+            echo 'export PERCY_TOKEN="$PERCY_PYTHON_TOKEN_V0"' >> $BASH_ENV
+      - run:
+          name: Install requirements
+          command: |
+            sudo pip install --upgrade virtualenv
+            python -m venv venv || virtualenv venv
+            . venv/bin/activate
+            pip install -e ./packages/python/plotly
+      - run:
+          name: Build html figures
+          command: |
+            . venv/bin/activate
+            pip install pandas statsmodels --quiet
+            python test/percy/plotly-express.py
+      - run:
+          name: Run percy snapshots
+          command: |
+            npx percy snapshot test/percy/
+            rm test/percy/*.html
+
   # Optional
   python-2.7-optional:
     docker:
@@ -367,6 +399,7 @@ workflows:
       - python-3.5-core
       - python-3.6-core
       - python-3.7-core
+      - python-3.7-percy
       - python-2.7-optional
       - python-3.5-optional
       - python-3.6-optional

.gitignore

@@ -40,3 +40,4 @@ plotly/tests/test_orca/images/*/failed
 plotly/tests/test_orca/images/*/tmp
 /plotly-package/plotly/tests/test_core/test_offline/plotly.min.js
 temp-plot.html
+.vscode

.gitmodules

@@ -1,6 +1,3 @@
 [submodule "submodules/mplexporter"]
 	path = submodules/mplexporter
 	url = git://github.com/mpld3/mplexporter.git
-[submodule "submodules/chunked_requests"]
-	path = submodules/chunked_requests
-	url = git://github.com/chriddyp/chunked_requests.git

CHANGELOG.md

@@ -2,6 +2,42 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [4.2.1] - 2019-10-18
+### Fixed
+ - Fixed regression in 4.2.0 that caused all figure factories to require that scikit-image be installed ([#1832](https://github.com/plotly/plotly.py/pull/1832))
+
+## [4.2.0] - 2019-10-16
+
+### Updated
+ - Updated Plotly.js to version 1.50.1. See the
+ [plotly.js CHANGELOG](https://github.com/plotly/plotly.js/blob/master/CHANGELOG.md#1501----2019-10-15)
+ for more information
+
+### Added
+ - Added `treemap` trace type ([plotly.js#4185](https://github.com/plotly/plotly.js/pull/4185), [plotly.js#4219](https://github.com/plotly/plotly.js/pull/4219), [plotly.js#4227](https://github.com/plotly/plotly.js/pull/4227), [plotly.js#4242](https://github.com/plotly/plotly.js/pull/4242))
+ - Added `add_*`/`select_*`/`for_each_*`/`update_*` convenience figure methods for annotations, shapes, and images ([#1817](https://github.com/plotly/plotly.py/pull/1817))
+ - Added `overwrite` kwarg to `update*` figure methods to fully replace property values, rather than update them recursively ([#1726](https://github.com/plotly/plotly.py/pull/1726))
+ - Added `texttemplate` attribute to all traces that support on-graph text ([plotly.js#4071](https://github.com/plotly/plotly.js/pull/4071), [plotly.js#4179](https://github.com/plotly/plotly.js/pull/4179))
+ - Added date custom formatting in `hovertemplate` and `texttemplate` e.g. `'%{x|%b %-d, %Y}'` ([plotly.js#4071](https://github.com/plotly/plotly.js/pull/4071))
+ - Added transition support to `bar` trace length, width, on-graph text positioning, marker style and error bars ([plotly.js#4180](https://github.com/plotly/plotly.js/pull/4180), [plotly.js#4186](https://github.com/plotly/plotly.js/pull/4186))
+ - Added support for legend scrolling via touch interactions ([plotly.js#3873](https://github.com/plotly/plotly.js/pull/3873), [plotly.js#4214](https://github.com/plotly/plotly.js/pull/4214))
+
+### Fixed
+ - Fixed `iframe` renderer on Python 2 ([#1822](https://github.com/plotly/plotly.py/pull/1822))
+ - Fixed use of merged templates in plotly.express ([#1819](https://github.com/plotly/plotly.py/pull/1819))
+
+## [4.1.1] - 2019-09-02
+
+### Updated
+ - Updated Plotly.js to version 1.49.4. See the
+ [plotly.js CHANGELOG](https://github.com/plotly/plotly.js/blob/master/CHANGELOG.md#1494----2019-08-22)
+ for more information
+ - The width of a figure produced by the `create_gantt` figure factory now resizes responsively ([#1724](https://github.com/plotly/plotly.py/pull/1724))
+
+### Fixed
+ - The name of the steps property of `graph_objects.indicator.Guage` has been renamed from `stepss` to `steps`
+ - Avoid crash in iframe renderers when running outside iPython ([#1723](https://github.com/plotly/plotly.py/pull/1723))
+
 ## [4.1.0] - 2019-08-06
 
 ### Updated

README.md

@@ -66,7 +66,7 @@ Built on top of [plotly.js](https://github.com/plotly/plotly.js), `plotly.py` is
 
 - [Online Documentation](https://plot.ly/python)
 - [Contributing](contributing.md)
-- [Changelog](packages/python/plotly-geo/CHANGELOG.md)
+- [Changelog](CHANGELOG.md)
 - [Code of Conduct](CODE_OF_CONDUCT.md)
 - [Version 3 Migration Guide](migration-guide.md)
 - [New! Announcing Dash](https://medium.com/@plotlygraphs/introducing-dash-5ecf7191b503)
@@ -78,12 +78,12 @@ Built on top of [plotly.js](https://github.com/plotly/plotly.js), `plotly.py` is
 
 plotly.py may be installed using pip...
 ```
-pip install plotly==4.1.0
+pip install plotly==4.2.1
 ```
 
 or conda.
 ```
-conda install -c plotly plotly==4.1.0
+conda install -c plotly plotly=4.2.1
 ```
 
 ### Jupyter Notebook Support
@@ -126,10 +126,10 @@ set NODE_OPTIONS=--max-old-space-size=4096
 jupyter labextension install @jupyter-widgets/jupyterlab-manager@1.0 --no-build
 
 # FigureWidget support
-jupyter labextension install plotlywidget@1.1.0 --no-build
+jupyter labextension install plotlywidget@1.2.0 --no-build
 
 # and jupyterlab renderer support
-jupyter labextension install jupyterlab-plotly@1.1.0 --no-build
+jupyter labextension install jupyterlab-plotly@1.2.0 --no-build
 
 # JupyterLab chart editor support (optional)
 jupyter labextension install jupyterlab-chart-editor@1.2 --no-build
@@ -162,6 +162,12 @@ pip install psutil
 
 and orca can be installed according to the instructions in the [orca README](https://github.com/plotly/orca).
 
+#### Troubleshooting
+##### Wrong Executable found
+If you get an error message stating that the `orca` executable that was found is not valid, this may be because another executable with the same name was found on your system. Please specify the complete path to the Plotly-Orca binary that you downloaded (for instance in the Miniconda folder) with the following command:
+
+`plotly.io.orca.config.executable = '/home/your_name/miniconda3/bin/orca'`
+
 ### Extended Geo Support
 Some plotly.py features rely on fairly large geographic shape files. The county
 choropleth figure factory is one such example. These shape files are distributed as a