Change log list

v1.0.0 | 2021-07-03

first publish

v1.0.1 | 2021-07-04

update demo and doc(README) files

v1.0.2 | 2021-07-05

update demo and doc(README) files

v2.0.0 | 2021-08-02

refactor
- support for multi-instance

v2.0.1 | 2021-08-18

features
- watermark for image (HTMLImageElement)
  note that need same-origin or support cross-origin
  if not, still the same with normal element

v2.0.2 | 2021-08-29

features
- z-index option
  make it enable to specify z-index
- debug option
  disable log in console as default
  set it to true to open(turn log enabled)

v2.0.3 | 2023-03-28

doc
update README.md, update demo