* Add histogram, add hdfs.

* build: update travis-ci configuration

* fix: public path error in graphs page

* 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

changes made:
1. adjusted path to relative path
2. added an installation method (installing by coding)
Co-authored-by: NZeyu Chen <chenzeyu01@baidu.com>

* 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.

* feat: add tag select in high-dimensional page

* v2.0.0-beta.43

Modify logo position

* fix: remove gitHead from package.json

* fix: clean dist before build

* fix: clean dist before build

* build: disable frontend ci build temporarily

* fix: navbar items order

* feat: refresh components when click refresh button

* v2.0.0-beta.41

* bump 2.0.0-alpha.3

* fix: language change support public path

* v2.0.0-beta.42

* bump 2.0.0-alpha.4

* 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.

* fix: minor bug fix

* fix: navbar index url

* v2.0.0-beta.34

* fix: samples page walltime mistake

* v2.0.0-beta.35