Release 0.1-4:
  * Minor change for CRAN.

Release 0.1-3:
  * Changes to autoconf for CRAN.

Release 0.1-2:
  * C function prototype changes for CRAN.

Release 0.1-1:
  * Add report to configure log.

Release 0.1-0:
  * Added internal and external IP lookup via getip().
  * Added hostname-to-ip lookup via hostname2ip().
  * Added IP address validator via validip().