Angular.js 1.7.4 已发布，包含以下修复更新：
ngAria.ngClick: prevent default event on space/enter only for non-interactive elements (61b335, #16664, #16680)
ngAnimate: remove the "prepare" classes with multiple structural animations (3105b2, #16681, #16677)
$route: correctly extract path params if the path contains a question mark or a hash (2ceeb7)
ngHref: allow numbers and other objects in interpolation (30084c, #16652, #16626)
select: allow to select first option with value undefined (668a33, #16653, #16656)
作者：王练
https://www.oschina.net/news/99734/angularjs-1-7-4-released