Turned on remaining tests for LIL and fixed indexing for multi-index
tests.
Changed name of test_fancy_indexing defined inside TestLIL to
test_fancy_indexing_lil to prevent the method in _TestFancyIndexing from
getting overridden.
More test fixes. Sparse matrices weren't broadcast to arrays.
Fixed _index_to_arrays to handle cases such as b[[1, 3]] and for the
row vector special case.
Added exception list to hanging except.
Minor cleanup of test_base.py including changing a few comparison arrays
to test sparse matrix against NumPy matrix.
More polishing of test_base.py
Commented out tests that required 3-D structures
Undid unnecessary slice changes and added error handling.
Deleted commented out code.
Got rid of some code duplication in _index_to_arrays
Changed order of index checks
BUG: sparse/lil: Python 3 fix
TST: sparse: work around test issues with CSR/CSC (indexing may return dense matrices)