Support for manual calibration. Included with this, I lowered the setblock height from 255 to 250 because eyes often become invisible when the player is near the height limit prior to 1.14.
Improved delays for commands. Tested on both decent and bad hardware, 1.11.2 and 1.16.1. It's still possible for commands to fail, but it's much less common in my testing.
Display 75% confidence interval in the calibration panel, using the chi-squared variance test.
The min and max values on the histogram now change depending on the size of the largest error.
Increased decimals available for boat eye standard deviation by 1.
Added the following features: