Dear Galaxy team,
Please consider pulling these changes I made to the 
interlacer/de-interlacer tools into the main Galaxy repository:
https://bitbucket.org/fangly/galaxy-central/changeset/7f7ec8f05d36
While the tools were handling mate pairs fine, I now added the ability 
to also keep single reads (reads that miss their mate) in a separate 
file. The functional tests were updated and pass.
Thanks,
Florent