bugfix: calling ngx.thread.wait() on a user thread object that is already waited (i.e., already dead) would hang forever. thanks Sam Lawrence for the report.
bugfix: the bookkeeping state for already-freed user threads might be incorrectly used by newly-created threads that are completely different. thanks Sam Lawrence for the report.
added a test for using ngx.flush(true) with the standard ngx_gzip module. it could hang in mainline nginx cores older than 1.5.3.
bugfix: reading the value of ngx.status might get different values than ngx.var.status. thanks Kevin Burke for the report.
Merge pull request #1 from chaoslawful/master

update panic