New blocks for snapshot

Granite, Diorite, Andesite (new data values for blockid:1)
Iron trapdoor

See #1062
New snapshot block: slime blocks

See #1062
Added ['time'] attribute to Players POI

It's nice that we can see where a player was at logout, but now we can see when that logout was.
Merge branch 'master' into snapshot
Added the ability to specify multiple crop zones.
Merge branch 'master' into snapshot
Updated documentation and added an additional validation check for
improperly formatted crop zones.
Lazily get names from UUIDs

Instead of doing the UUID->name resolution for all players in every
case, only do it when EntityId is accessed and the name hasn't been
retrieved this run already. This makes genPOI usable for people who
have many players on their servers but don't wish to use player POI
while still using other genPOI features.

To do this, a PlayerDict has been created, which contains a dirty
hack to see if the requested item is EntityId and whether it hasn't
been set already.
Try to prevent findGitHash from ever returning None
Try to prevent findGitHash from ever returning None

See #1093
Remove broken special case for ancient worlds

And to whoever wrote that thing: "World10" is not 6 characters
long, so the workaround was broken anyway.
Long overdue addition of information to docs

  * Add 2 FAQ entries, one concerning mod blocks, the other
    about the maps API.

  * Add note about The End and lighting strength. (Closes #1111)
    (Also, nice quads.)
config.rst restructuring with new headings

This hopefully makes the page slightly less intimidating.
Update front page of the docs

lol
Minor fixes to documentation

  * Fix the copypasted section in the README

  * Update version and dates
Merge pull request #1112 from CounterPillow/worldnamefix

Remove broken special case for ancient worlds
Merge pull request #1110 from CounterPillow/genpoi-triage

genPOI triage
Fix warning for unresolvable UUID

Exception while catching an exception. Try to make an inception joke of that.
add new 14w25a prismarine and sea lantern blocks
Merge pull request #1118 from CounterPillow/patch-1

genPOI: Fix warning for unresolvable UUID