v0.1.5

#Improved grid testing#

• Added expected hash rate, percentage of expected hash rate achieved, and rejected share percentages to the heatmap options
• Added a system that allows the user to highlight cells in the heatmap that meet stability/headroom criteria, to better select an "optimal" point instead of the highest raw hash rate - the test run still applies the highest hash rate settings when the test completes, but a more balanced approach may achieve lower rejection rates