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New parameter .id for ldply() to specify name of index column (default: .id); fixes #140; fixes #107
New parameter .id for rdply() to specify name of index column (default: .n); fixes #142
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update Rd files
Generate .id column as factor in ldply(); fixes #137
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Merge branch 'fix/140-142-id-137-column-as-factor' into develop

Conflicts:
	NEWS