kmer v1.0.2

This release addresses some minor issues and includes a new function argument:

• Resolved bug in kcount where sequence disambiguation was prevented by
  sapply failing to simplify NULL values.

• Enabled users to manually control compression of amino acid sequences
  in kcount via new 'compress' argument. Thanks to Thomas Shafee for suggestion.

• Fixed bug in otu that prevented additional arguments being passed to
  nested functions via "dots".

Initial CRAN release

kmer v1.0.0 released on CRAN 2018-03-07.