#105 Add IPF support to fuse

[Philip Kendall]

We have previously not been able to add IPF support to Fuse due to the closed nature of the IPF library, but it seems that the MAME team have reverse engineered enough of the format to be able to do things with it:

https://github.com/mamedev/mame/blob/ddb290d5f615019c33c42b8d94e5a5254cabcf33/src/lib/formats/ipf_dsk.cpp

There's also some very useful looking reverse engineered format documentation at http://info-coach.fr/atari/documents/_mydoc/IPF-Documentation.pdf