message: [feat] add resetMore API for inifinity scroller
diff: @@ -128,6 +128,7 @@ InfiniteScroller.prototype.maybeRequestContent = function () {
  }
  this.requestInProgress = true
  this.options.fetch(itemsNeeded).then((items) => {
  + this.requestInProgress = false
  if (items) {
  this.addContent(items)
  } else {
  @@ -151,7 +152,6 @@ InfiniteScroller.prototype.maybeRequestContent = function () {
  }
  InfiniteScroller.prototype.addContent = function (items) {
  - this.requestInProgress = false
  for (let i = 0; i < items.length; i++) {
  if (this.items.length <= this.loadedItems) {
  this._addItem()
  @@ -171,6 +171,10 @@ InfiniteScroller.prototype.attachContent = function () {
  this._setupAnimations(tombstoneAnimations, curPos)
  }
  +InfiniteScroller.prototype.resetMore = function () {
  + this.hasMore = true
  +}
  +
  InfiniteScroller.prototype._removeTombstones = function () {
  let markIndex
  let tombstoneLen = 0
  