dialr 0.2.1

Performance improvements

Code calling libphonenumber methods via rJava has been tweaked for performance,
including using more efficient rJava acess methods and caching commonly used
static values. Most operations are now approx. 10 times faster.

Major changes

• Updated R dependency to R >= 3.2.3. R 3.6.0 just came out and highr, a dependency of knitr, requires >= 3.2.3 so build fails on 3.1.x.

Minor changes

• New introductory vignette("dialr").

• New is_match() function supports proper phone equality checks. == and
  != now use is_match() for phone vectors. (#1)

• More region and type functions implemented. See ?`dialr-region` or
  ?`dialr-type` for details.

• New get_example() function generates example phone numbers for provided
  regions and types.

• Improved function documentation.