unmarked 1.5.0

• Add community occupancy model (occuComm)
• Add hazard key function support to IDS
• Large overhaul of unmarkedFit methods including getP, fitted, residuals, ranef, nonparboot, parboot, simulate etc. Most important change was to standardize missing value handling; sites with all missing values are no longer silently dropped in output
• Improve and standardize documentation for these methods
• More tests for these methods
• Use reformulas package instead of lme4 for random effects formula handling
• Fix likelihood bug in goccu when primary periods were missing
• Fix bug in occuMulti getP method