Change the key to drop weapon in hydra slayer

[BlackCapCoder]

The key to drop your weapon is k, which overlaps with the vi movement keys. If I get in a situation where I have to drop my weapon to destroy a mushroom, then currently I have to press <F4>kk<Esc>k<F4>kk<Esc> to disable my vi keys in the noteye screen, drop my weapon and then turn my vi keys back on again. That is really awkward.

= to toggle keyboard configuration does not seem to do anything in the noteye Linux version of the game.