Test program for AccurateWaiter

Dependencies:   SerialStream AccurateWaiter

This test program shows how to use AccurateWaiter and demonstrates its performance.

Here's what it looks like running on a NUCLEO_F429ZI: https://app.box.com/shared/static/a7vuulqeqodh7pn5skgvniwo0b4h3pmj.png

Revision:
0:df183df60d24
diff -r 000000000000 -r df183df60d24 SerialStream.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SerialStream.lib	Thu Nov 12 23:17:01 2020 -0800
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/MultipleMonomials/code/SerialStream/#3736580f2dbeb8adf0607fcfd0f434b4faa08a03
\ No newline at end of file