* add download scalars

add content-type for scalar data

* delete _register_reader
Co-authored-by: Nwuzewu <wuzewu@baidu.com>

lgtm

* add backend code for hidi v2

* add faq.md

* 2.0.4

* add space

* add VISUALDL_RUN_PREFIX

* fix review

* simplify logi
Co-authored-by: Nwuzewu <wuzewu@baidu.com>

* chore: set server address

* chore: add bce-python-sdk to requirements

* fix: limit max length of runs in chart tooltip table

* fix: coding style violation
Co-authored-by: NNiandalu <Niandalu@users.noreply.github.com>

* feat: dark mode support

* chore: use redux to manage global state

* chore: update dependencies

* build: increase yarn network timeout to avoid build error in github action

* feat: dark mode support

* chore: add module preload

* build: increase yarn network timeout to avoid build error in github action

* chore: fix docker build

* test: ignore no test error

* bump fe to 2.0.1

* feat: dynamic envs in vdl server

* bump fe to 2.0.2

* chore: fix docker build

* bump fe to 2.0.3

* fix: demo build error

* bump fe to 2.0.4

* chore: commit demo logs

* bump fe to 2.0.5

* fix: docker build error

* docs: update demo dat

* bump fe to 2.0.6

* feat: support cdn deployment

* bump fe to 2.0.7

* feat: support cdn deployment

* bump fe to 2.0.8

* chore: remove default demo path

* fix: graph iframe target origin

* bump fe to 2.0.9

Co-authored-by: NPeter Pan <littlepanzh@gmail.com>

* fix: error message cannot display correctly

* fix: query string missing when redirect from root to index

* build: update github actions

* chore: update dependencies

* feat: set smoothing from query string

* feat: remember smoothing in scalar page

* chore: better error handling when fetching data

* feat: add error page

* fix: build error in docker

* fix: build error in docker

* fix: incorrect locale redirect

* chore: use millisecond

* refactor: get rid of nextjs

* feat: add telemetry

* feat: add disable telemetry option

* fix #739

* fix: compatibility of nodejs 12

* mute webpack

* feat: show min & max value in scalar page

* fix: tooltip sorting chinese translation update

* style: fix lint

* fix bug for QUEUE_TIMEOUT

* fix bugs

* add `file_name` in LogWriter(0 for rewriting.

* fix reviews