update bib
Add tests of treatment of NULL values
Merge pull request #19 from kbroman/tests

Add tests of treatment of NULL values
Pass digits arg
Merge branch 'master' of https://github.com/jeroenooms/jsonlite
Trying custom print method
Minor updates
bib fixes
Refactor with template structure
typos
Fix unit tests for new json class
Bump to dev version
Change to maintitle structure
Move commands
Typo's and stuff
Add chapter file
remove vignette entry
Experimental support for simplyfing matrices and arrays nested within data frames.
Add NEWS items
Remove 'cat' in vignette