loongson/pypi: links for abjad-ext-ipython

loongson/mirror abjad-ext-ipython-3.3.tar.gz
loongson/mirror abjad-ext-ipython-3.0.0.tar.gz
loongson/mirror abjad-ext-ipython-3.0.0a1.tar.gz
loongson/mirror abjad-ext-ipython-3.0.0a0.tar.gz