Brydon Wall

BED files should be interpreted as 0-based end-exclusive

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Bed files are 0-based, half-open intervals [start, end), but are visualized as closed [start, end] when using custom BED regions. See BED format: [here](https://genome.ucsc.edu/FAQ/FAQformat#format1).

This subtracts 1 from input BED files "END" column to change from BED files' half-open to what sequenceTubeMap expects is a closed interval. `[start, end) -> [start, end]`