functions.R
In regexr: Readable Regular Expressions

| Function             |  Description         |
|----------------------|----------------------|
| `construct`  | Write Human Readable *Concatenated Regex* | 
| `%:)%`  | Add Comments to a Sub-expressions Within `construct` | 
| `unglue`  | Break *Concatenated Regex* Into *Sub-expressions* | 
| `test`   |  Test Validity of *Concatenated Regex* & *Sub-expressions* |
| `subs`   |  Get/Set Sub-expressions in a `regexr` Object |
| `comments`   |  Get/Set Comments of Sub-expressions in a `regexr` Object |
| `names`   |  Get/Set Names of Sub-expressions in a `regexr` Object |
| `as.regexr`| Coerce Existing Regular Expressions to `regexr` Object |