added sandbox/slice-reads-by-coverage.py
added collect-reads for streaming subsampling
Merge branch 'master' of github.com:ged-lab/khmer into feature/collect_reads
updated ChangeLog re collect-reads and slice-reads-by-coverage
Add failing tests for Issue #174 (TDD)
Improve quality of error message
Adopt ValueError as the desired Python exception and make more consistent with other negative tests
make diff_pylint_report tweaks
Fix Issue #174 - ktable.get(wrong_length_string) gives core dump
Update ChangeLog
Modify some user-visible output strings
Merge pull request #585 from Echelon9/fix/get-wrong_length_string

Fix table.get("wrong_length_string") gives core dump
clarify checklist
update URL to dev docs
Merge pull request #584 from ged-lab/doc/pylint-diff

clarify checklist & update dev docs URL
first pass removal of old sandbox files
more triage; recovered graph-size
more triage
first round triage on sandbox/, done
added bigcount option to collect-reads