Timestamp: fix to 6 decimal places (microsec)
It's a lot easier to read when the values are aligned.
stacktrace: make it faster
We only need the first two frames and we don't need function
Stack trace: include line number
debug_backtrace is dumb and the function / class are always off by
one stack frame... I have no idea why.
Added note about dygraphs license to the README.
Added license and clarification in the README.
Initial import of MemLog code.