Hi, IsoQuant is an incredible tool that has significantly streamlined long-read transcriptome analysis.

Issue Description:
While using IsoQuant, I noticed a potential improvement in the logic for calculating extra_left and extra_right in src/long_read_assigner.py.

File and Lines:
src/long_read_assigner.py, lines 187–188

Original Code:

extra_left = 1 if read_region[0] + self.params.delta < transcript_start else 0
extra_right = 1 if read_region[0] - self.params.delta > transcript_end else 0

Suggested Update:

extra_left = 0.5 if read_region[0] + self.params.delta < transcript_start else 0
extra_right = 0.5 if read_region[1] - self.params.delta > transcript_end else 0

Please let me know if this suggestion aligns with the intended design.