Document new methods on Cypress.dom

[jennifer-shehane]

[brian-mann]

The most recent list of publicly accessible DOM methods are:

module.exports = {
  wrap

  unwrap

  isDom

  isType

  isVisible

  isHidden

  isFocusable

  isTextLike

  isScrollable

  isDetached

  isAttached

  isSelector

  isDescendent

  isElement

  isDocument

  isWindow

  isJquery

  stringify

  positionProps

  getElements

  getReasonIsHidden

  getFirstScrollableParent

  getFirstFixedOrStickyPositionParent

}