Multi-region sampling

[junseonghwan]

• Read in bulk file where the variant and total reads can be separated by comma.
• Parameters at each node is to become multi-dimensional.
• Sampling of the parameters to be for each region independently.
• Re-assigning an SNV results in computation of bulk likelihood for each region independently.
• Re-assigning an SNV with single cell coverage results in update of single cell likelihood cache.