Novel alleles should maintain dots for IMGT-gaps

[Jason Vander Heiden]

Novel allele sequences are output with dashes instead of dots for IMGT-gaps, which breaks expectations in other tools (changeo, alakazam and shazam).

Should be changed to output germlines with . characters for IMGT-gaps.

[Jason Vander Heiden]

Changed in 88deb19. Just needs testing.

[Jason Vander Heiden]

Done.