Changes in version 1.1.1                        

  - Fix bug where an input is NA or NULL causes an error. Now returns
    that input (NA if NA, NULL if NULL).
  - Can now encrypt numeric values. Works the same as with strings.

                 Changes in version 1.1.0 (2020-09-03)                  

  - Can now encrypt or decrpyt vector of strings (previously could only
    do a single string at a time).

                 Changes in version 1.0.0 (2019-05-09)                  

  - Added a NEWS.md file to track changes to the package.
  - Misc bug fixes.
  - Adds many tests.
  - Adds more documentation including a vignette.