Fix cue skipped when empty line follows timing (#74)

[SHi-ON]

Closes #74

Summary

This pull request addresses issue #74 by updating the subtitle cue parsing logic. Now, any multi-line cue where an empty line immediately follows the timing line will be stripped and parsed, as per the desired behavior.

Details

• Checks for an empty line(s) directly after the timing in multi-line subtitle cues.
• Adds test coverage for this edge case.