loongson/pypi: links for tiddlywebplugins-differ

loongson/mirror tiddlywebplugins.differ-0.6.4.tar.gz
loongson/mirror tiddlywebplugins.differ-0.6.3.tar.gz
loongson/mirror tiddlywebplugins.differ-0.6.2.tar.gz
loongson/mirror tiddlywebplugins.differ-0.6.1.tar.gz
loongson/mirror tiddlywebplugins.differ-0.6.0.tar.gz
loongson/mirror tiddlywebplugins.differ-0.5.tar.gz