Resolves

  sambamba/utils/common/queryparser.d(441): Error: std.ascii.isWhite at /usr/include/dmd/phobos/std/ascii.d(200) conflicts with std.uni.isWhite at /usr/include/dmd/phobos/std/uni.d(6417)

with dmd 2.064.2 on Debian.
Merge pull request #60 from pjotrp/master

std.regex somehow publicly imports std.uni in DMD 2.064.2