* build: remove protobufjs dependency

* chore: support runtime config

* v2.0.0-beta.44

* fix: api url build config

* v2.0.0-beta.45

* fix: give up runtime config

* fix code style

* use publicPath config in i18n

* fix python app typo

* VisualDL User Guide-English Version

* Update UserGuide-final-syx0706.md

* test: add test case

* feat: add chart tooltip in histogram overlay

* feat: add tooltip in histogram chart

* Add pr curve.

* chore: update dependencies

* fix: compatibility of safari (#674)

* chore: code polishment

* fix: calculate step width in tooltip (#672)

* doc: update readme

* feat: histogram

* Fix warning for hdfs

* Update docs.

* fix: graph export style missing

* bump 2.0.0-beta.6

* build: use stable channel of rust toolchain