* Add histogram, add hdfs.

* chore: update dependencies

* feat: high-dimensional chart will fit screen size now

* fix: scatter chart cannot be rendered properly

* chore: separate api module

* intergrate netron

* intergrate netron

* feat: graphs

* style: fix lint

* chore: update dependencies

* fix: type error

* chore: update dependencies

* chore: update graph color

* 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

* bump 2.0.0-beta.2

* chore: render static files in memory

* fix: empty requests in high-dimensional chart

* feat: reduce fetching interval when components is empty

* feat: show loading tip when components is empty

* chore: delete unused files

* bump 2.0.0-beta.3

* chore: remove model_pb argument

* fix: windows file encoding error

* fix: windows path sep error

* feat: add --api-only argument

* feat: add docker runtime

* style: remove unused variable

* pref: use tuple to reduce memory usage in template render

* chore: build opencv for docker alpine to reduce image size

* fix: high-dimensional page error when runs and tags mismatching

* build: fix build error and add docker build

* build: fix build error and add docker build

* build: fix build error and add docker build

* Add readthdocs for VisualDL.

* Update version to beta.1

* Fix readthdocs.

* Fix readthdocs.

* Fix readthdocs.

* style: lint shell scripts

* fix: translation fix

* feat: support changing public path when start

* v2.0.0-beta.36

* feat: support changing public path when start

* v2.0.0-beta.37

* build: core build fix

* v2.0.0-beta.38

* build: build frontend from source code

* fix: clean static files when exit

* fix: dependency version mismatching

* chore: remove unused api route

* fix: navbar actived link missing

* feat: redirect root

* fix: scalar chart tooltip value error

* feat: dynamic render nav items

* fix: high-dimensional page background missing

* v2.0.0-beta.39

* build: stop using script mode

* v2.0.0-beta.40

* Revert "build: stop using script mode"

This reverts commit 6c1ca297.

Add version.py.

* resolve server rename conflict

* feat: add running toggle stopped color

* feat: revalidate runs and tags when refreshing

* v2.0.0-beta.26

* fix: make language optional

* fix: language before open_browser

* * 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.

frontend 2.0.0-beta.24: more style lint rules, add server language detection, build process improvement (#604)

* chore: fit requirements of python 3

* feat: fix global frontend lint

* build: use cached frontend package

* feat: add browser language detection

* style: introduce sort imports, more style mixins

* 2.0.0-beta.24

Fix backend data transfer perf issues

* remove unnecessary fields

* performance: add cache to images

* performance: add debounce to step slider

* v2.0.0-beta.16

* style: better type reference

* fix: better implementation of revalidation & minor bug fix

* v2.0.0-beta.17

* feat: chinese translation adaptive

* fix: select height limitation

* chore: better error handling on revalidation

* v2.0.0-beta.18

* v2.0.0-beta.12

* v2.0.0-beta.13

* fix: use new development server

* v2.0.0-beta.14

* build: build frontend from npm tarball

* fix: update python setup

* add paddle framework.proto and support show paddle-fluid model in web page

* modify the graph drawing policy, only draw operator node in default

* Resolution of code style issues raised by Superjomn

* front-end add vue-i18n dependency

* back-end support language selection with option --language or -L

* front-end add language support with vue-i18n

* Add preliminary support for Windows

    Known issues:

    1. No zlib support for protobuf
    2. Manual editting to core.vcxproj are required
    3. No build and packge script support
    4. Not tesetd, may break linux build

* Add build script and batch file for Windows

* Fix linux build and include batch file in wheel

* Fix Python 2.7 build

* Define NOMINMAX instead of preventing macro expansion

* Use a more light weight method to get PCA and T-SNE. Update embedding documentations. Update loading animation

* Reveal the embedding tab

* Add the auto reload. and fix typos

* Update comments

* Limit embedding tag name to be embedding only

* display the runs to the user, so they can pick which embedding to see

* The server now loads run parameter.

* Remove the need of passing a tag name to embedding log writer and reader.

* Remove un-needed fetch

* Use first item in the list

* rename showingRun to selectedRun

* Add license to the top of files

* Add licenses agreement on the demo files

* Complete audio data integration:
* Add num channels, sample width, sample rate as params
* Generate audio file with proper params

* clang format

* Audio integration to front end
* Add flask end point
* Read and decode audio data

* refract a typo

* fix clang format

* Make the frontend to fetch the data from the flask server.

* Provide loading animation.

* Fixed format style
Fix the issue where the display label not working.

* Provide a 2D 3D switcher.
Display the chart in 3D.

* Include PCA method to do dimension reduction

* Fix the style.

* Fix typo
Use === to compare type as well.

* Add manual Save feature.

* Fix the incorrect style

* Add feature to record Text

* Create a simple UI for text preview.

* Connect frontend with backend text data

* Move a constant from parameter to the body.
Remove test log

* Add Python 3 support

* Update protobuf to 3.5 and pybind to 2.2.2

* Update test scripts to use python -m

* Change zip/xrange/import usages

* Remove file generated by

* Graph viz set up (#282)

* 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.

* Make test and build scripts compatible with python 2 & 3

* A WITH_PYTHON3 option was added to cmake.

* setup.py will detect runing version python, and setup up WITH_PYTHON3 environemnt variable before calling build.sh

* build.sh and test.sh will handle WITH_PYTHON3

* Fix pybind warning

* Pass WITH_PYTHON3 correctly

* Fix coding style

* Add six for Python 2 and 3 Compatibility

* Fix coding style

VDL is set to retry an pybinded API call multiple times in case the call fails the first time.  The issue is the method lib.retry will sleep the thread for 2 seconds after an exception.  Since VDL was not running in threaded mode, this causes all request to the server to stop immediately, therefore even requests to get static resource are frozen.  This change enables threaded mode in flask. (#249)

* Add C++ and python style check to travis.  
* Update all C++/python code that violate coding standards.