This records a failed attempt to fill up memory for testing
min_count_autoadjust. I am recording it in case I want to try
something like it again.
The next iteration of the test code for min_count_autoadjust.

If I make the word vectors large enough that memory is exhausted
quickly, the kernel out-of-memory manager kills it before it has a
chance to adjust the vocabulary. If I make the word vectors smaller,
it has to make the sentence lists too large. I ran it for 12 hours
without it running the final min_count_autoadjust iteration. I just
realized that my sentence iterator is just returning large single-word
sentences. Oops. I'll try fixing that and see if things improve.
Last attempt at test code. With the sentence iterator corrected the process gets killed almost immediately. 5 sentences doesn't get a MemoryError and 6 sentences is killed by the Kernel. I'll remove the test code in the next commit.
Removed all the test code. The low memory functionality is too difficult to test. I will leave it untested.