Fix backend data transfer perf issues

* fix: scalar nil value protection

* feat: better image defer and cache control

* v2.0.0-beta.19

* build: stablize build process

* mute security vulnerabilities

* build: hack setuptools

* build: stablize build process

* mute security vulnerabilities

* 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

* build: fix build on windows

* add loading & empty style

* 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

* 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

* build: optimize wasm files

* build: use bionic instead of trusty

* build: build wasm first

* build: fix path overwritten

* build: disable rustup changing path

* build: fix typo

* build: test path

* build: re-export path when build

* build: update build scripts

* build: frozen lock file when building

* build: fix syntax error

* v2.0.0-beta.9

* v2.0.0-beta.11

* build: publish npm package

* chore: use wasm to handle datasets

* style: ts ignore wasm

* build: fix travis-ci

* build: fix travis-ci

* build: disable prompt during rustup install

* build: add rustc to path after install

* build: cache cargo

* feat: high-dimensional features without zoom/refit

* fix: mute eslint

* refactor: initialize VisualDL 2.0

* refactor: fix dev server problem

* refactor: add i18n

* refactor: fix i18n

* infra i18n支持

* styled-components for debug

* infra. essential hack for styled comopnent

* use yaml for translation

* fix: navbar url problem

* feat: add nuxt module to build locales

* fix: index route redirect error

* feat: add page title

* refactor: move i18n to module

* feat: add html lang attribute

* R.I.P

* Hello React

* refactor: initialize VisualDL 2.0

* fix: layout rerender

* add favicon

* add page title

* add meta tags

* feat: finish tag filter

* refactor: hook tastes good

* add single select

* finish components

* add api server

* scalars segregate metrics

* json-server sucks

* echarts

* add eslint

* bug fix

* finish scalars page

* change layout, fix aside

* add commit hook

* use tag filter hook

* add chart loading

* encapsulate run select

* samples page under construction

* finish images

* feat: graph page, still need some polishment

* finish high-dimensional

* fix mock data problem

* update readme

* fix build

* fix: use Buffer.from instead of constractor

* update Readme

* add simplified chinese readme

* build: travis

* build: travis

* style: fix type errors

* build: travis-ci

* fix: remove unused page

* add docker build

* opt-in for SSG, remove server-side data fetching & server-side i18n
Co-authored-by: NNiandalu <Niandalu@users.noreply.github.com>

* feat: update graph page locale file & some code polishment

* feat: update graph page locale file & some code polishment

* fix: eslint violations

* fix: dedup

* refactor: initialize VisualDL 2.0

* refactor: fix dev server problem

* refactor: add i18n

* refactor: fix i18n

* infra i18n支持

* styled-components for debug

* infra. essential hack for styled comopnent

* use yaml for translation

* fix: navbar url problem

* feat: add nuxt module to build locales

* fix: index route redirect error

* feat: add page title

* refactor: move i18n to module

* feat: add html lang attribute

* R.I.P

* Hello React

* refactor: initialize VisualDL 2.0

* fix: layout rerender

* add favicon

* add page title

* add meta tags

* feat: finish tag filter

* refactor: hook tastes good

* add single select

* finish components

* add api server

* scalars segregate metrics

* json-server sucks

* echarts

* add eslint

* bug fix

* finish scalars page

* change layout, fix aside

* add commit hook

* use tag filter hook

* add chart loading

* encapsulate run select

* samples page under construction

* finish images

* feat: graph page, still need some polishment

* finish high-dimensional

* fix mock data problem

* update readme

* fix build

* fix: use Buffer.from instead of constractor

* update Readme

* add simplified chinese readme

* build: travis

* build: travis

* style: fix type errors

* build: travis-ci

* fix: remove unused page
Co-authored-by: NNiandalu <Niandalu@users.noreply.github.com>

* refactor: initialize VisualDL 2.0

* refactor: fix dev server problem

* refactor: add i18n

* refactor: fix i18n

* infra i18n支持

* styled-components for debug

* infra. essential hack for styled comopnent

* use yaml for translation

* fix: navbar url problem

* feat: add nuxt module to build locales

* fix: index route redirect error

* feat: add page title

* refactor: move i18n to module

* feat: add html lang attribute

* R.I.P

* Hello React

* refactor: initialize VisualDL 2.0

* fix: layout rerender

* add favicon

* add page title

* add meta tags

* feat: finish tag filter

* refactor: hook tastes good

* add single select

* finish components

* add api server

* scalars segregate metrics

* json-server sucks

* echarts

* add eslint

* bug fix

* finish scalars page

* change layout, fix aside

* add commit hook

* use tag filter hook

* add chart loading

* encapsulate run select

* samples page under construction

* finish images

* feat: graph page, still need some polishment

* finish high-dimensional

* fix mock data problem

* update readme

* fix build

* fix: use Buffer.from instead of constractor

* update Readme
Co-authored-by: NNiandalu <Niandalu@users.noreply.github.com>

The Histogram Constructor have allocated memory for storing
the variable vector<int> frequency, but not release after then.
I have created a destructor function to free the memory.

Add usage manual for VisualDL, and modify four pictures in directory demo/component/usage_interface. (#549)

The usage maunal will be helpful for beginners to make use of VisualDL.

The components of ViusalDL are introduced in details,
including definitions of functions, parameters explanations.
Moreover, demos are given for each component.

The former pictures of demo are lack of some details in the frontend webpage,
I upload new pictures to make demo more intuitive.

add component usage demo

* update README

* release 1.3.0

* update README

* sync

* sync

* sync

* sync

* only support Float32

* add more data types

* clang format

* clang format

* typo fix in vdljl.cc

* Delete vdl.jl

Git tag 9f69353562fe is the last commit in protobuf 3.1.x.

* Update the travis script

* update doc generate path

* revert test

* test

* test

* test

* test

* test

* Update script

* Pull from PPO develop branch to test

* Remove tmp print messages

* We don't need no, PYTHONIFICATION

* Fill small shell typo