Composer warning with Exception class

[lmammino]

As reported in composer/composer#2828 in my comment, I've got the following composer warning when I try to dump the composer autoloader:

** Warning: Ambiguous class resolution,
"Tvision\RackspaceCloudFilesStreamWrapper\Exception\Exception" 
was found in both 
"/var/www/example.com/shared/vendor/tvision/rackspace-cloud-files-streamwrapper/src/Tvision/RackspaceCloudFilesStreamWrapper/Exception.php" 
and 
"/var/www/example.com/shared/vendor/tvision/rackspace-cloud-files-streamwrapper/src/Tvision/RackspaceCloudFilesStreamWrapper/Exception/Exception.php", 
the first will be used.

[lmammino]

I'm using the 2.2 version and, as far I can see from the code, it seems to be fixed in v3.0.0. If this latest version does not contain breaking changes from 2.2, I can opt to switch to it.