Fixes:

• Fixed export dialog issue where "Loop Count" and "Duration" options could both be disabled
• Fixed issue where a leading whitespace in the project name would break ROM / NSF export
• Fixed issue with FamiTracker exports where envelopes weren't truncated to max supported length
• Fixed issue where sequencer didn't update when deleting a sample in "DPCM Sample" color mode
• Fixed issue introduced in 4.5.0 regarding MIDI instruments no longer exporting as intended
• Added option to replace arps in context menu
• Fixed crash with broken MIDI files (unexpected end of file)
• Fixed issue where pasting a pattern in the sequencer could lead to it containing an unsupported effect
• Fixed issue with switching back to instrument arp after using an override