factor 0.1.0

• Fixed … arguments (exp example tricked me) (@jonthegeek).
• Fixed NULL default arguments (@jonthegeek).
• Added a vignette (@jonthegeek, #5).

factory 0.0.4.9000

• No longer need to use weird empty = in argument list (@jonthegeek, #4).
• Changed the main function to build_factory (a verb) (@jonthegeek, #11).

factory 0.0.3

• Got rid of .error_message argument to factory (@jonthegeek).

factory 0.0.2

• Added a NEWS.md file to track changes to the package. (@jonthegeek)
• Cleaner replacement implementation in factory (@jimhester, #1).