build automatic properties in constructor
update $wifi with reachability callback
first pass at using gcd serial queue for synchronization
formatting
create a single, reusable date formatter for each instance of the lib
remove old comment
be explicit about atomicity
formatting
release date formatter in dealloc
comment
clean up Mixpanel.m some
fix memory leak in ODIN lib
inline application observer code
pragma
start flush timer on main queue
end background task if there isn't anything to flush
unnecessary synchronized
make tests work with gcd
tests
release serial queue, start flush timer and don't unarchive async