Add jqplay link to the site
Automatically update jq.1.prebuilt
Document the lambda nature of function args #391
Add `env` builtin
Fix typo; rename jq.1-prebuit to jq.1.prebuilt
Allow multiple functions with different arities
Fix Win64 jq.exe link on main page
Update AUTHORS
Add missing contributors to AUTHORS
Add ChangeLog and NEWS files
Remove download 1.3 button; reposition try online
Added `flatten` and `flatten(x)` functions

Fix #415.
Don't declare environ on WIN32
No args default w/ tty stdout, not tty stdin #220
Fix #280: from_entries of [] is null, should be {}
Fix #266; make help message more useful
Fix #419, improve Cannot index message (sortof)

jv_get() doesn't know if it's being called in the context of a jq
program or not, so it can't produce a very useful error message when the
types of the to-be-indexed value and the key don't agree.  For now,
including the key (when it is a short string) in the error message is as
significant an improvement as is easy to make.
Simplified standard library

Close #426.

Signed-off-by: Nicolas Williams <nico@cryptonector.com>
Use new style in manual for defs with args
Remove trailing whitespace from manual.yml