0.3.0

• fixed default value for $flag argument of pinba_timers_get
• fixed return value of pinba_tag_delete
• fixed: when creating two or more timers with the same tag values, but tags in different order, they would not be merged
• added: class PinbaClient - with a few limitations, see README
• added method: pinba_reset
• improved: added more sanity checks of function arguments values, closely matching the behaviour of the extension
• improved test code coverage