Respect the max_records_in_ram property by passing along to picard command.  Set re_reverse default to true to match Picard default behaviour.
rename genome model instrument-data assign expression for clarity
Clarify help text at Dave Larson's request
Call Genome::Model::Command::InstrumentData::Assign::Expression by the new name
Relax validation of reporter plan

Allow additional interpreters that aren't "required" by the reporter
Vcf reporter requires only minimal interpreters

We can now specify arbitrary "filterpreters" to be
used with the vcf reporter.  We don't need the specialized
vcf reporters that simply add another "required" interpreter.
Merge pull request #68 from apregier/relax-vcf-reporter

Relax vcf reporter
Merge pull request #58 from jasonwalker80/picard_max_records
Merge pull request #67 from jweible/master

Rename "genome model instrument-data assign expression"