doc: added a warning for the "share_all_vars" option for ngx.location.capture*.
doc: fixed some formatting issues in markdown.
doc: ngx.var: named more readonly nginx builtin variables, as per adamonduty's request in #440.
api: bumped the version number to 0.9.14.
doc: updated our TODO list.
doc: added two more TODO items.
feature: added the Lua global __ngx_cycle which is a lightuserdata holding the current ngx_cycle_t pointer.
bugfix: ngx.re.gsub/ngx.re.sub incorrectly swallowed the character right after a 0-width match that happens to be the last match. thanks Guanlan Dai for the patch in #442.
tests: fixed a test case which expects 127.0.0.1:53 has nothing to listen on, which is not true when a local DNS caching server is enabled.
optimize: save our own log ctx for timers.
bugfix: ngx.timer.at: fixed a small memory leak in case of running out of memory (which should be extremely rare though).
bugfix: fixed a compiliation error in the timer module when the DDEBUG macro is set to 1 or a C compiler without variadic macro support (like the Microsoft Visual C++ compiler) is used. thanks itpp16 for the patch in #443.
reindexed the tests in t/036-sub.t.
added tests for using the ngx. API functions in the user callback functions for ngx.re.gsub's replacement. these tests exposed a bug in lua-resty-core.