V4 release instructions (#1618)

Initial work on updating the release process for the three separate distribution packages

Author: jonmmease

Diff for: .gitignore

@@ -36,4 +36,4 @@ plotly.egg-info/
 plotly/tests/test_orca/images/*/failed
 plotly/tests/test_orca/images/*/tmp
 /plotly-package/plotly/tests/test_core/test_offline/plotly.min.js
-/plotly-package/plotly/tests/test_core/test_offline/temp-plot.html
+temp-plot.html

Diff for: contributing.md

@@ -0,0 +1,32 @@
+{% set sdata = load_setup_py_data() %}
+
+package:
+  name: chart-studio
+  version: {{ sdata['version'] }}
+
+source:
+  path: ..
+
+build:
+  noarch: python
+  script: "{{ PYTHON }} -m pip install . --no-deps --ignore-installed --no-cache-dir -q"
+
+requirements:
+  build:
+    - python
+    - pip
+  run:
+    - python
+    {% for dep in sdata.get('install_requires',{}) %}
+    - {{ dep }}
+    {% endfor %}
+
+test:
+  imports:
+    - plotly_express
+
+about:
+  home: {{ sdata['url'] }}
+  summary: {{ sdata['description'] }}
+  license: {{ sdata['license'] }}
+  license_file: LICENSE.txt

Diff for: makefile

@@ -0,0 +1,32 @@
+{% set sdata = load_setup_py_data() %}
+
+package:
+  name: plotly-geo
+  version: {{ sdata['version'] }}
+
+source:
+  path: ..
+
+build:
+  noarch: python
+  script: "{{ PYTHON }} -m pip install . --no-deps --ignore-installed --no-cache-dir -q"
+
+requirements:
+  build:
+    - python
+    - pip
+  run:
+    - python
+    {% for dep in sdata.get('install_requires',{}) %}
+    - {{ dep }}
+    {% endfor %}
+
+test:
+  imports:
+    - plotly_express
+
+about:
+  home: {{ sdata['url'] }}
+  summary: {{ sdata['description'] }}
+  license: {{ sdata['license'] }}
+  license_file: LICENSE.txt