Internally there is only LLTimers:on(), but it could be confusing for beginners:
LLTimers.every(1, print) -- with a point
-- > invalid argument #1 to 'on' (LLTimers expected, got number)
LLTimers:every(1, myUndefFunc)
-- > invalid argument #3 to 'on' (function or callable table expected, got nil)
If :every() is the prefered one, could the internal function be every() instead of on()?