To do

[wurli]

• Use package structure
• Add unit tests
• Implement special tweets when version numbers change
• Implement special tweets when new versions land on CRAN
• Make it easier to add new packages. Right now, if a new package gets added all historic updates will be tweeted unless it's carefully dealt with. The initial update should just cache the NEWS.md file.
• For threads, put hashtags at the end of the first tweet and link at the end of last tweet