Feature Request: Add encoding option to return as a uint

[KilowattSynthesis]

It seems like you use a list-of-2-lists-of-ints representation of each cell state.

Another common standard (arguably more common) is the left-shift style, which looks like this:

# Braille dot numbers:
# 1 4
# 2 5
# 3 6
# 7 8 # <- These two are optional.

Then the cell state is represented by a single uint8_t value, which is the bitwise OR of left-shifted ones representing each dot in the cell.

Dot	Bit Position
1	0 (1 << 0)
2	1 (1 << 1)
3	2 (1 << 2)
4	3 (1 << 3)
5	4 (1 << 4)
6	5 (1 << 5)
7	6 (1 << 6)
8	7 (1 << 7)