BeePop+ calculation of daylight hours varies slightly on some Linux systems

[JeffreyMinucci]

When running on some Linux distros, simulation results can diverge very slightly over long periods of time. This may be caused by slight variation in the daylight hours calculation - as observed in the output. Repeated runs with the example files randomly returns two possible sets of results - one that is consistent with Windows and other distros (RHEL8) and passes tests, and one that differs slightly and fails tests.

test_results_aws_linux.csv
test_results_aws_linux_pass.csv

Documented on the following Linux distros with BeePop 0.1.1:

• Ubuntu
• AWS Linux