Multiple scorer updates, mostly aimed at reducing note status flipping

[jbaxter]

1. Update the minimum LCB threshold for notes to become CRH to 0.35 from 0.32. This dramatically reduces the number of notes that become CRH due to this rule, but is necessary because notes that were becoming CRH when they had LCB intercepts between 0.32 and 0.34 were flipping back to NMR too often, so this change dramatically reduces the amount of status flipping.
2. Update maximum note status flip rate to 0.09 from 0.15, to avoid flip-flopping note statuses after the model convergences to different local modes
3. When running in parallel, read the data within each individual process rather than passing that dataset to each new process.
4. Some more refactoring for clarity.