* feat(helpers): add method to detect iOS version

* feat(helpers): add a variable to determine whether it is iOS environment

* feat(bscroll): set the default value of variable use-transition

* fix(picker): fix the scrolling problem in iOS13.4 webview

* fix(scroll): fix the scrolling problem in iOS13.4 webview

* docs(ios13.4): added default description of better-scroll parameter

Bumps [codecov](https://github.com/codecov/codecov-node) from 3.0.4 to 3.6.5.
- [Release notes](https://github.com/codecov/codecov-node/releases)
- [Commits](https://github.com/codecov/codecov-node/commits)
Signed-off-by: Ndependabot[bot] <support@github.com>

submitAlwaysValidate to control validate always when submit

* fix(segment-picker): fix no hidden animation

* fix(time-picker): value last choose was changed when open again

* test(time-picker): add the value of the selected test

Bumps [merge](https://github.com/yeikos/js.merge) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/yeikos/js.merge/releases)
- [Commits](https://github.com/yeikos/js.merge/compare/v1.2.0...v1.2.1)
Signed-off-by: Ndependabot[bot] <support@github.com>

Bumps [extend](https://github.com/justmoon/node-extend) from 3.0.1 to 3.0.2.
- [Release notes](https://github.com/justmoon/node-extend/releases)
- [Changelog](https://github.com/justmoon/node-extend/blob/master/CHANGELOG.md)
- [Commits](https://github.com/justmoon/node-extend/compare/v3.0.1...v3.0.2)
Signed-off-by: Ndependabot[bot] <support@github.com>

#637

Bumps [webpack-bundle-analyzer](https://github.com/webpack-contrib/webpack-bundle-analyzer) from 2.13.1 to 3.3.2.
- [Release notes](https://github.com/webpack-contrib/webpack-bundle-analyzer/releases)
- [Changelog](https://github.com/webpack-contrib/webpack-bundle-analyzer/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/webpack-bundle-analyzer/compare/v2.13.1...v3.3.2)
Signed-off-by: Ndependabot[bot] <support@github.com>

Bumps [tar](https://github.com/npm/node-tar) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/npm/node-tar/releases)
- [Commits](https://github.com/npm/node-tar/compare/v2.2.1...v2.2.2)
Signed-off-by: Ndependabot[bot] <support@github.com>

Bumps [fstream](https://github.com/npm/fstream) from 1.0.11 to 1.0.12.
- [Release notes](https://github.com/npm/fstream/releases)
- [Commits](https://github.com/npm/fstream/compare/v1.0.11...v1.0.12)
Signed-off-by: Ndependabot[bot] <support@github.com>

Bumps [sshpk](https://github.com/joyent/node-sshpk) from 1.13.1 to 1.16.1.
- [Release notes](https://github.com/joyent/node-sshpk/releases)
- [Commits](https://github.com/joyent/node-sshpk/compare/v1.13.1...v1.16.1)
Signed-off-by: Ndependabot[bot] <support@github.com>