* removed debug println
* added newline to the end of the file
* time: add .unix_time_milli() method; rand,time: add tests
* rand: add more ulid tests; move tests to a separate file random_identifiers_test.v
* run vfmt over vlib/rand/random_identifiers_test.v
* speed up time.unix_time_milli
* simplify and speedup time.unix_time/0 and time.new_time/1
* update comment about rand.ulid()
* fix terminating 0 off by 1 issue in rand.ulid()
* optimize time.new_time()
* restore the master version of vlib/time/parse.v
* make test_unix_time more robust
Co-authored-by: Delyan Angelov <delian66@gmail.com>
