PSA: breaking changes in StatsModels v0.6.0 (Terms 2.0: Son of Terms)

[dave.f.kleinschmidt]

Of note to users, this version will introduce a few interesting user-facing features, including

• lead and lag terms (thanks to @oxinabox)
• support for arbitrary julia code (with some restrictions) within the @formula
• easier programmatic construction of formulae.

See the docs or the announcement post here for more information on the last two…