Add initial conditions to remaining (non-benchmark) MATPOWER instances

.gitattributes

@@ -1 +1,6 @@
 * text=auto
+*.bz2 diff=bz2
+*.gz diff=gzip
+*.tar diff=tar
+*.tar.bz2 diff=tar-bz2
+*.zip diff=zip

.gitignore

@@ -3,6 +3,7 @@
 *.lastrun
 *.so
 *.mps
+*.ipynb
 .ipy*
 benchmark/results
 benchmark/runs