zircleUI/zircleUI

## Pull Request Guidelines

- The `master` branch is basically just a snapshot of the latest stable release. All development should be done in dedicated branches. **Do not submit PRs against the `master` branch.**

- Checkout a topic branch from the relevant branch, e.g. `dev`, and merge back against that branch.

- Work in the `src` folder and **DO NOT** checkin `dist` in the commits.

- It's OK to have multiple small commits as you work on the PR - we will let GitHub automatically squash it before merging.

- Make sure `npm test` passes. (see [development setup](https://zircleui.github.io/docs/contribute/#development-setup))

- If adding new feature:
  - Add accompanying test case.
  - Provide convincing reason to add this feature. Ideally you should open a suggestion issue first and have it greenlighted before working on it.

- If fixing a bug:
  - If you are resolving a special issue, add `(fix #xxxx[,#xxx])` (#xxxx is the issue id) in your PR title for a better release log, e.g. `update entities encoding/decoding (fix #3899)`.
  - Provide detailed description of the bug in the PR. Live demo preferred.
  - Add appropriate test coverage if applicable.