v1.5.10

• Explicitly set the XMLHttpRequest request to be asynchronous (#682).
• Improve TypeScript declarations (#791).

v1.5.9

• Fix the issue of fail to zoom out on touch device (#726).
• Add TypeScript declarations for the events.

v1.5.8

• Fix the issue when the value of the minContainerWidth/Height options is 0 (#683).
• Reset the initial canvas size when the minCanvasWidth/Height options is set (#725).
• Store the initial image data in the right place for avoiding side-effect.

v1.5.7

• Improve container resizing (#636).
• Improve touch device detection (#614).

v2.0.0-alpha.1

• Merge improvements from v1.

v1.5.6

• Improve event type determining for iOS 13+ (#571).

v1.5.5

• Clone the image's crossOrigin attribute always even though the checkCrossOrigin is set to false (#535).
• Improve browser environment detecting (#554).

v1.5.4

• Avoid removing the events of the original image.
• Avoid requesting any Data URLs by XMLHttpRequest for better performance (#526).
• Add an alt attribute to all internal images for better accessibility (#548).
• Transform enums to types from the definition files for TypeScript (#550).

v1.5.3

• Compute the size of the image for all browsers that use WebKit as the layout engine in iOS devices, such as Safari and in-app browsers (#544).

v1.5.2

• Alway add a timestamp to the URL of a cross-origin image (#519).