Merge pull request #1548 from nakib103/dbd_mysql_version

Restrain using latest DBD::mysql version

Author: likhitha-surapaneni

Diff for: cpanfile

@@ -2,7 +2,7 @@ requires 'DBI';
 requires 'Set::IntervalTree';
 requires 'JSON';
 requires 'Text::CSV';
-recommends 'DBD::mysql';
+recommends 'DBD::mysql', '<= 4.050'; # newer versions do not support MySQL 5
 recommends 'PerlIO::gzip';
 recommends 'IO::Uncompress::Gunzip';
 recommends 'Bio::DB::BigFile';