[new feauture] PullRefresh: add success-text、success-duration props (y…

…ouzan#2709)

[bugfix] Functional component inherit context (youzan#2686)

[improvement] add weapp-nav icon (youzan#2682)

[new feature] Field: add click-left-icon event (youzan#2605)

[new feature] SwitchCell: add active-value & inactive-value prop (you…

…zan#2591)

fix Field test cases

[bugfix] missing dependencies jsx helper

[Doc] List: update demo & document (youzan#2573)

bump @vant/icons@1.0.7

[improvement] Icon: add cart-circle icon (youzan#2480)