Improvements for fastqtranform and bamtag
Improvements for fastqtranform and bamtag

- Support old style read numberings (read/1, read/2) in UMI generation
  by extracting read numbers if present and putting at end of read
  after UMI.
- bamtag: Handle any potential extra characters (like /1 read numbers)
  after query name by expanding UMI only by \w characters
- bamtag: Fix typo in alignment tag naming (RX, not XR).

roryk/umis,vals/umis,roryk/umis,vals/umis