Will now work with Firefox and Thunderbird version 10.

I weithio efo Firefox a Thunderbird hyd at versiwn 9.

To work with Firefox and Thunderbird versions up to v9

Newidiadau i wneud yn siwr bod y geiriadur yn gweithio efo Thunderbird 6 and Firefox 7.
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Updated to ensure compatibility with Thunderbird 6, which I just realised doesn't work!
Should also now work with Firefox 7.

Mozilla's new update cycle means that I'm going to have to do this more often from now on I suppose!!

Now works with Firefox 4.
<em:unpack> tag required for successful installation into FF4.