When running unit test on a 64 bit Linux platform, the following unit tests is failing and shows the following output:

[ RUN      ] TestSoftTimers.testMicrosOverflow
/home/runner/work/SoftTimers/SoftTimers/test/TestSoftTimers.cpp:100: Failure
Value of: t.hasTimedOut()
  Actual: true
Expected: false
Unexpected timeout! getElapsedTime() returns 18446744069414584627. micros() returns 53
[  FAILED  ] TestSoftTimers.testMicrosOverflow (0 ms)

This is because unsigned long is 64 bit on Linux 64 bit. The win32Arduino unit test library used to define the return type of millis and micros functions as uint32_t which was forcing 32 bits even on 64 bit systems. Following the correction for #5, both functions return type is now unsigned long (which is matching the official Arduino.h definition) but this creates issues with unit tests.

Unit tests must be corrected to run without errors in both 32 bit and 64 platforms.

Related to issue #5.