* fix: public path cannot be set to root path if not in api mode

* fix: use position argument

* fix: support legacy call method

* doc: update document

* Add readthdocs for VisualDL.

* Update version to beta.1

* Fix readthdocs.

* Fix readthdocs.

* Fix readthdocs.

* * Support starting vdl in python.

* Fix null point error.

* Add introduction to python startup method in README.md.

* Fix blank picture cause of scalar null response.

* release 1.3.0

* update README

* New menu json

* Updated menu.json

* Fix a borken link

* Fix the cn link

* New logo

* Remove ewww line

* Update embedding label color

* Splite the data into matched and not-matched list

* After switching the dimension, also filter the list

* Use color variables to keep track the color

* Update color.

* Complete re layout the documentation on PPO.

* Add how to develop in cn. Also rearrange the demo location.

* Update the doc to use CDN

* Update installation guide.

* Update the doc setting to use layout.html template

* Update the documentations to fix some grammer error

* Adjust the sync_cycle automatically.

* Change the multiplier type to double.

* Adjust the sync_period.

* Fix comment.

* Add the pre-commit

* Run pre-commit with other files.

* Update the version number
Update the doc to include Vue
Update the doc to give more details on the sync_cycle
Update the doc to include python 3

* Update the LogWriter constructor doc.

* Update the package copy directory.

* Update the version to 0.0.2 (implying beta now)

* Update the vdl_create_scratch_log to python 3 as well.

* add manylinux build

* update build.sh

* typo

* Display documentations of demos on the Docs.

* Rename the title from `demos` to `Examples`.

* Add the support to write documentation in the pybind directly.

* Provide more detail of the API documentations.

Update the link in how_to_dev_backend_en.md to the full path. This should resolve the issue where the API doc not building. (#288)

* Include the Graph requirement, GraphViz` in docs.

* Provide information to the ONNX format model export.

* Ask the user to download Graphviz via the website instead of brew.

* Adds backend / SDK dev doc

* Update per Varun and chanwei's comment

* Provide instructions on virtualenv.

* Clean up the detail a little bit.

* Add how to develop frontend documentation.

* Provide a bit of information on san file.

* fix some information error

* Update the documention.

* Simplify the documentation.

* Remove unnecessary sentences

* Add travis-ci job to deploy docs to visualdl.paddlepaddle.org.  Update readme's to correctly show all images.

* Add SSH known hosts

* Add in additional restrictions for documentation deploy:
* Only deploy on merge to 'develop' branch

Update the requirements.txt to include pre-commit

* Add the Chinese and English "Contribute Code" documentations.

* Provide some more detail messages in the documentations