Increment version number

Remove "Downloading" from vignettes by hand, like an animal (see jenn…

…ybc#310)

update html of formulas-and-formatted-numbers vignette

link to decent looking html vignettes [skip ci]

where to see Sheets API issues/bugs/status reports [skip ci]

machinations necessary for success w/ CRAN submission [skip ci]

suppress execution of certain vignette chunks on CRAN
  * to still build the full vignette locally, make sure envvar NOT_CRAN is TRUE
  * I forgot to do this and submitted a largely unexecuted vignette :(
  * I figure I'll need to update for other reasons before too long and can re-submit vignette at same time

 make sure the *unencrypted* token is not sent to CRAN
  * list the token in tests/testthat in .Rbuildignore
  * this will cause tests to fail on travis (hence we are skipping ci)

adapt to cellranger v1.0.0

Merge pull request jennybc#137 from jennybc/refactor-data-consumption

refactor data consumption and editing

Merge pull request jennybc#121 from jennybc/refactor-sheet-listing-re…

…gistration

Refactor sheet listing and registration; rename almost everything

better initial version number

will soon merge a branch with lots of UI-breaking changes and want to be able to tag the before