Initial revision of an ERCC spike-in QC command.  This needs to be in a pipeline with software results.
A new version of the ERCC spike-in QC that uses existing RNA-seq alignments to a reference and annotation that includes the ERCC transcripts.
Use last_succeeded_build instead of lastest_build
Add new params to sanitize BAM file available since Picard 1.108
Fixes to compilation issues.  Consistant use of hash_ref instead of dereferencing. Add test case.
Add version check for sanitize option.
Remove R library dependency on optparse.
Add correct version parsing.
Remove is_optional when default_value is defined.
A couple class definition changes and an update to the sanitize picard version comparison to include v1.108
Added back a few more is_optional values for default attributes.
segment log_r_r difference
update test.
update blessed build.
Split out base class features from Tree command.
Pull down base options since only one command inherits.
Updated `genome` tab completion.
Merge pull request #252 from tmooney/dont_inherit_mc16s_commands

Fix MC16s copy-files inheritance
Really die if we don't find a subject.
enable feature to automatically re-enable volumes

If we need to take volumes out of automatic management we'll have to set
disk_status to inactive.