Fixes misspelling in books.json (crashes game on reading)
Greatly reduced canister crafting time
Fix double percent sign in newchar
Fix throw range calcuation for item stacks

When calculating the throwing range for a stack of items, the whole
stack is taken into consideration, but we only need to throw one item.
This commit fixes that by making the range calcuation use only a single item.
Change Load/Help hotkeys to a/e respectively.

Addresses issue #233
astyle + delete commented out code
Fixes low skill message for adding gunmods.
start printing MOTD & Credits from line 6

16 lines of MOTD currently doesn't fit in proper place and touches menu.
Move monster vision range into it's own function
Make fleeing use ::plan instead of wandering
Fix leap potential uninitialized
Add leap short-circuit
Make marloss berries slightly more rare
Merge continuing bugfixes.