message: feat: support v-html for SVG elements
diff: /* @flow */
  import { isDef, isUndef, extend, toNumber } from 'shared/util'
  +import { isSVG } from 'web/util/index'
  +
  +let svgContainer
  function updateDOMProps (oldVnode: VNodeWithData, vnode: VNodeWithData) {
  if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
  @@ -55,6 +58,17 @@ function updateDOMProps (oldVnode: VNodeWithData, vnode: VNodeWithData) {
  if (shouldUpdateValue(elm, strCur)) {
  elm.value = strCur
  }
  + } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
  + // IE doesn't support innerHTML for SVG elements
  + svgContainer = svgContainer || document.createElement('div')
  + svgContainer.innerHTML = `<svg>${cur}</svg>`
  + const svg = svgContainer.firstChild
  + while (elm.firstChild) {
  + elm.removeChild(elm.firstChild)
  + }
  + while (svg.firstChild) {
  + elm.appendChild(svg.firstChild)
  + }
  } else {
  elm[key] = cur
  }
  