New util 'nval()' to count distinct values. Change names of settings utils to avoid S3 method confouding
Document summary methods
Fix summary.tdr()
Fix Merge
Add format convertion control in formatSES
Pass R check: remove unneeded dep R.oo and rename Rd file (duplicated
insensitive case)
Release 0.5: Type conversion on import. S3 methods for summary().