No need for the 'year' word. Fixed the 'preview' word (correct orthography).

 - element-carousel@1.0.0
 - element-table@1.0.0
 - element-upload@1.0.0
 - element-datepicker@1.0.0
 - element-loading@1.0.0
 - element-pagination@1.0.0

* popover memory leak fix

* actual fix

* collapse-transition: fix strange transition behaviour in safari

* 为你库兼容ie9

* move collapse-transition from tree to src/common

Select: fix disabled multiple filterable bug, add missing scrollbar s…

Table: fix sortable, allows cancellation sort

Select: update style if initially invisible

MessageBox: add default customClass, fixed #2438

InputNumber: prevent cursor from moving to head when pressing up on c…