implement binary search tree in Go
Update javascript etl spec to match README

Values are associated with letters rather than words
Add a note to bob readme about going beyond the test suite

I've noticed people sending in solutions to bob that look specifically for the
input lines in the test (like 'WATCH OUT!') instead of using the
question/yelling/silent rules.
Wrapping functions in `expect` testing error

If you are calling `problem.answer` method as is, it's scope is
global and can not access instance variables in `problem` object.
Therfore, this test will be always returning success.
Merge pull request #1386 from drueck/update-javascript-etl-spec

Update javascript etl spec to match README
Merge pull request #1387 from pminten/bob-add-note

Add a note to bob readme about going beyond the test suite
Merge pull request #1388 from marocchino/fix-coffee-wordy

coffee wordy: Wrapping functions in `expect` testing error
ruby/clock spec: test wrapping around backwards.
ruby grade-school test: skip all but one test
Merge pull request #1392 from alxndr/ruby_grade-school_test-tweak

add missing `skip` to a ruby grade-school test file
Remove irrelevant instructions from clock exercise
Use UTC to avoid timezone issues in clock example
Allow fetching of next exercise when you have hibernating submissions
Merge pull request #1393 from stevenwu/develop

Allow fetching of next exercise when you have hibernating submissions
Strip trailing whitespace.
Clarify precedence in query
Merge pull request #1390 from henrik/patch-9

ruby/clock spec: test wrapping around backwards.
Ditch accumulate exercise in coffeescript
Revert "Ditch accumulate exercise in coffeescript"

This reverts commit e59d576dd3cf98fb7631972d499df58191d7837a.
Deprecate accumulate in coffeescript