Changing last hint to answer + bolding last hint, take 1 (A -> C)
Merge branch 'master' of https://github.com/Khan/khan-exercises
Add exercise: Free throw probability
Fewer players; css bug
minor change to hints (fixes multiple issues)
minor change to hints (fixes multiple issues)
Merge pull request #20566
make hint button descriptions a little clearer
address @spicyj 's review comments: indentation and proper pluralization
Rename free_throw to independent_probability
Merge branch 'lebron' of ../../eater/khan-exercises
Disable scratchpad so users aren't drawing on the scrollbar

fix #21018; fix #21013; fix #20994; fix #20993; fix #20984; fix #20982; fix #20981
create() calls activate(), so activate() should be defined before the call to create() is queued
Merge pull request #21095 from beneater/timeline-fix

create() calls activate(), so activate() should be defined before the call to create() is queued
first pass at adding logging for stacks. Still lots of TODOs before shipping.
add the actual cards sent from the client to stack logs. TODO: saving problem log references
lint fixes for khan-exercise.js
use stack-specific UID (instead of first card UID) to ID stacks; add stack class
Try to require 'json', to get a natively-compiled json compiler.

By default, ruby uses ok_json, which is written in ruby.  The
native-compiled version should be a lot faster.  Recommendation taken
from
   http://flori.github.com/json/

If json isn't found, we'll continue, but print a warning message
saying how to make things better.  (This is in addition to the warning
message that pack.rb already printed about ok_json not being great.)
Merge pull request #21869 from csilvers/master

Try to require 'json', to get a natively-compiled json compiler.