Issues in printing of ttensor

[tgkolda]

The printing of a ttensor has a few problems:

1. It says it's a "Tensor" rather than a "Tucker Tensor".
2. The core is printed in C-order rather than in terms of its frontal slices.
3. There is a missing line break between the printing of the core and the first factor matrix, U[0].
4. Suggest writing "core[...]=" rather than "data[...]=" when printing the core.

G41 = ttb.tensor(np.array([1,1,0,1,1,0,0,1]),(2,2,2));
U = np.array([[1, 0],[0, -1],[1, 1]]);
V = np.array([[1, -1],[1, 1],[0, 1]]);
W = np.array([[0, 1],[1, 1],[1, 0]]);
X41_tt = ttb.ttensor(G41, [U, V, W])
print(X41_tt)

Tensor of shape: (3, 3, 3)
	Core is a
	tensor of shape (2, 2, 2)
	data[0, :, :] =
	[[1 1]
	 [0 0]]
	data[1, :, :] =
	[[1 0]
	 [1 1]]	U[0] = 
		[[ 1  0]
		 [ 0 -1]
		 [ 1  1]]
	U[1] = 
		[[ 1 -1]
		 [ 1  1]
		 [ 0  1]]
	U[2] = 
		[[0 1]
		 [1 1]
		 [1 0]]

[ntjohnson1]

1. Makes sense, we should fix
2. This uses the dense tensor printing so when that's fixed we get that for free here
3. Makes sense
4. Hmm we can probably indent the whole core print out so it's clearer that the Core is note captures all of that

[ntjohnson1]

Marking as closed via #353 (naming data to core should get resolved in discussion on #350)