[FIX] FMIndex: fixed bwtLength() return type
[FIX] Index: fixed Size<>
[FIX] Index: overloaded lcp fibre for stringsets
[FIX] Index: removed a warning in lcp construction
[FIX] QGram Index: fixed hash type inside iterator
[FIX] QGram Index: fixed types within construction
Merge pull request #296 from esiragusa/fix/index

Various fixes for indices