Made changelog current as of b836cdc78ef97ee9688030a1f152192f8140e93e.
A number of copyedits and fixed some ommisisions.  Thanks all.
Vehicles block acid fields
Removes muzzle gunmod location on revolvers
Create constants for bounds of scentmap in for loops.
Whitespace formatting for grscent assignment readability.
Rename bool matrix has_wall_here to blocks_scent.
Rename bool matrix reduce_scent_here to reduces_scent.
No need to compare bools to bools.
Additional comments and some rewording.
Pre-increment instead of post. Bleh.
Added phrase
Add a handler for the char type to the json module.
Move key mapping for mutations into player class and save/load them.
Merge branch 'WaterAbort' of https://github.com/malhawee/Cataclysm-DDA into stop
Merge remote-tracking branches 'dda/pr/9814', 'dda/pr/9815' and 'dda/pr/9817' into dda-master

* dda/pr/9814:
  Vehicles block acid fields

* dda/pr/9815:
  Removes muzzle gunmod location on revolvers

* dda/pr/9817:
  Pre-increment instead of post. Bleh.
  Additional comments and some rewording.
  No need to compare bools to bools.
  Rename bool matrix reduce_scent_here to reduces_scent.
  Rename bool matrix has_wall_here to blocks_scent.
  Whitespace formatting for grscent assignment readability.
  Create constants for bounds of scentmap in for loops.
Merge branch '0.B-changelog-update' of https://github.com/kevingranade/Cataclysm-DDA into stop
Merge branch 'fix-mutation-keys' of https://github.com/kevingranade/Cataclysm-DDA into stop
Adds spoilage timers to canned goods.

Now that they won't all go bad just sitting on the shelf.
Document why we're shutting off acid damage.