Inconsistencies Between Default Settings in Documentation and Code

[spriego]

Dear Mike,

I've noticed some discrepancies between the default settings outlined in ShortStack's documentation and the actual code:

1. In the documentation, --mmap is listed as defaulting to f, but in the code (line 535), it's actually set to u.
2. Regarding --mincov, the documentation indicates a default value of 2, yet in the code (line 601), it's set to 1.