Added go module

v1.0.2

Added go.mod

Removed architecture specific test that was failing on ARM

There was a test for overflow on floating point to integer conversion that was x86-64 specific. This was causing the test to fail when run on other architectures.

Decided to remove the test, as it was testing the behavior of an implementation dependent edge case.

Tag v1.0.0 release

Tag the existing code as v1.0.0.