Keeping up with tidyverse

0.2.9

• new implementations of select, rename, and mutate (for unitted data) to
  keep up with changes to the tidyverse

0.2.8 and previous

• we weren't tracking news until 0.2.9, sorry!

v0.2.8

Includes bug fix for DOI-USGS/streamMetabolizer#337

Very minor doc & build fixes

Might save a few build warnings; otherwise not too different from v0.2.6

Updates for tibble and R3.3

v0.2.6

r cmd check fixes

Improve compatibility with R-devel

v0.2.5

get tests checking cleanly

Release for GRAN

v0.2.4

description updates

Initial snapshot release

v0.2.0

Updates for turning units into expressions