fixed annotation on music scale specs
+1 failing test: clock signal using setInterval, clearInterval and precise time fcn
+1 test pass: clock signal using setInterval, clearInterval...
+3 passing tests: clock with different timing values
+1 test pass: clearInterval should be called if clock stopped
+5 failing tests: clock should call clearInterval with the same handlers returned by createInterval when stopped
+5 test pass: clock should call clearInterval with the same handlers returned by createInterval when stopped
+1 failing test: function sequence
+1 test pass: function sequence
updated tests of clock for relative timing
+4 failing tests: clock gives relative times
+4 passing tests: clock gives releative times
+8 passing tests: relative clock with different time bases
+1 failing test: function seq should call setTimeout for an event
+1 test pass: call of setTimeout from function seq
removed unnecesary lines on tests
+1 passing test: setTimeout should be called with a function and zero timeout on event at zero
+1 failing test: when an event is set at 100, setTimeout should call with 100
+3 failing tests: fixed tests to simulate clock signals on each example
+3 test pass: fixed calls on clock from function seq