Problem with resize gif images when output quality is set about thumbnailator HOT 4 CLOSED

Thank you for the bug report.

The issue has been reproduced and work will start shortly.

The bug has been fixed.

A bug fix release (Thumbnailator 0.3.3) has just been released and is available 
for download.

Once again, thank you for taking the time to file an issue.

=======

Details about the issue:

Issue
-------

The issue was occurring due to the `FileImageSink` class not calling the 
`ImageWriterParam.setCompressionType` method, 
leading to a situation where the subsequent call to 
`ImageWriterParam.setCompressionQuality` causing an `IllegalStateException`.

(This exception-throwing behavior is documented in the Javadocs for the 
`ImageWriterParam.setCompressionQuality`.)

Fix
-------

The `FileImageSink` class (along with the `OutputStreamImageSink` class) has 
been fixed to call the `ImageWriterParam.setCompressionType` method
with the first compression type (if the compression type has not been set in 
the `ThumbnailParameter`) returned by the `ImageWriter`
for the specified output format. (If the `ImageWriter` doesn't provide any 
compression types, then the `ImageWriterParam.setCompressionType`
is not called.)

8 hours after reporting the issue is fixed, really impressive, thanks!