check for preceding whitespace on insertion
remove old code path that was never touched
Merge pull request #244 from rstudio/feature/magrittr-assignment-whitespace

check for preceding whitespace on insertion
guard against null refs when bound viewer data is missing
place help offscreen alongside completion list
implicitly accept completion if perfect match and no other prefix matches
hide completions on <mod> + enter; more help wrangling
only attach handler when showing
enforce fuzzy prefix matching on context completions
remove duplicates from returned completions
override hashCode as well
fix NaN when viewing some large datasets in viewer; style tweaks
- use manually specified row heights (avoid bug in DataTables scroller
  when auto row heights are in use)
- zebra stripe rows in viewer
- right align row names/numbers
- cap column width at 300px
respect assignment indentation
fix r completions in cpp mode
search factor columns with many levels as characters
reload data from correct settings object when viewer data changes
coerce to data.frame before applying viewer transforms (for data.table)
highlighting for integer, binary, user literals in c++ mode
cancel suggestion timer on keydown as well
Merge pull request #245 from rstudio/feature/autocompletion-implicit-accept

More implicit acceptance of autocompletions