use children instead of elements
put server work into a class
ignore package stuff and lock file
restructured data server and use logger
open server connection on construction
fixed directory creation
added beep audio file
play three beeps before starting trial
imported async to get Timer
started file for converting timestamps in log files
 wrote function to make datetime from time stamp string
started doing replacement of stamps
made dart version of convert file
used Date to get current time instead of time passed to animation frame handler
log target starts and timeouts in fixed target events also
replace time stamps with rendered date difference
log trial start before calling first timer event
allow subject and trial to be passed on the command line
added shebang to run as executable