fixed case where match on not independent state was not incrementing …

[dudzicp]

…insertions

[dudzicp]

to test this, consider sequence: QVQLQESGPGLVKPSTLSLTCTVCGVSINSGDYWGSRIRQHPGKGEWIAYMDSGNTYYKESLQSVTMSIDCKNQFCLKLSVNAADTAVYYCARAFRPYNSRPFDYRGQGTLVTVSS numbered to kabat scheme

[dudzicp]

this case was handled properly:

X X X X I X X
m m m d m ..
1 2 3 - 4 ..

this was not:

 X X X I  I X X
 m m m d  m ..
 1 2 3 - 3A ..

With existing logic both cases would be numbered as in first case