- add rmarkdown as a dependency for vignette
- update project and other URLs
- tweaks to vignette and documentation
- change for loops to lapply
- remove ineffective error-checking
- add user determination of whether to map "Q" and "Z" to 7 and 9 or to 0
- add additional tests due to new functionality
- add comments to existing examples
- add additional examples due to new functionality
- add package help file
- fix typos and add title to vignette
- add URLs to DESCRIPTION
- updates to README
- first version of phonenumber