v0.0.24 - better experience

Change log:

• file-type-mismatch event, which will be emitted when you drag and drop an invalid type of file, according to accept.
• The default scroll and touch behaviors are no longer prevented when there is no image.
• New method hasImage() to indicate whether currently there is a image.
• New method remove() to remove the current image. reset() method, which does the same job, will be deprecated in the future due to misnaming. Please avoid using it.
• New method supportDetection() providing information about browser supports for vue-croppa.
• Better compatibility.
• Fix image move after zooming to max size.
• Fix move and zoom events fired when they are prevented and the image is not actually zooming/moving.
• Add Vue version detect and warning.