wxc-ep-slider add enable-swipe param

• [!] wxc-dialog: supplement missing parameters show in document
• [!] wxc-mask: fix bug that inconsistent behavior between clicking close button and clicking overlay
• [+] wxc-pan-item: add judgment before using element

0.8.3

• [+] wxc-loading add loading-pic param.
• [+] wxc-slider-bar add block-color param.

• [+] wxc-slider-bar add wxcSliderBarTouchEnd event.
• [!] Fixed wxc-mask jitter bug when inputting.
• [!] Fixed the problem that the QR code does not display when debugging.

• [-] Remove alipay util,Preventing audit issues issue/467
• [!] wxc-tab-bar add supportXBar param.

• [!] fixedwxc-overlayproblem onwxc-tab-bar
• [+] add wxc-swipe-action
• [!] Fix wxc-button displaying style problem, add isHighlight attribute to control whether button is highlighted or not.

• [!] Fixed set transparency issues wxc-lightbox.
• [!] Fixed set transparency issues wxc-mask.
• [!] Fixed cannot click, the component cannot modify the internal style wxc-special-rich-text.
• [!] Fixed click no highlighting question wxc-button.

0.6.11

• [!] Fixed the shake when change disabled about wxc-button.
• [!] Fixed the line-height bug about wxc-stepper.
• [!] Fixed the loopedIndex bug about wxc-ep-slider.

• [!] Fixed the lines bug about wxc-popover when in web. issue/384
• [!] Fixed the sourceData warning about wxc-city when searching. issue/382
• [!] Fixed the btnStyle style cannot cover about wxc-button. issue/390
• [+] Add Weex and Bindingx DingTalk Group.

• [!] Fixed the bug about wxc-loading When need-mask is false.
• [-] Remove the special treatment for weex-toolkit in with-weex-toolkit.