Update version number (3.0 => 3.01)

Great plugin! Real time saver :o)

I wanted to update to the latest version of this plugin, but I had to manually delete and reinstall. I noticed that you tagged version 3.01, but the current version number in trunk is still at 3.0, even though it contains the changes made in 3.01 (for as far as I can see).

https://www.ads-software.com/plugins/enable-media-replace/