[datatable-help] v1.9.4 is now on CRAN

[Matt Dowle]

Available on Linux now or a few hours/tomorrow for Windows and Mac 
binaries to make their way to all mirrors.

NEWS is the README on CRAN :

     http://cran.r-project.org/web/packages/data.table/README.html

or the formatting may be easier to read on GitHub :

     https://github.com/Rdatatable/data.table

The first two points deal with by=.EACHI and the option to revert to the 
old behaviour should you need to.  Of the 66 packages on CRAN or 
Bioconductor, this only affected 3. So either by-without-by wasn't 
getting much usage or it is but those packages don't have tests covering 
that usage.

Have also updated FAQs 1.13 and 1.14 (a lot) regarding by=.EACHI :

 
http://cran.r-project.org/web/packages/data.table/vignettes/datatable-faq.pdf

Main new features: i) overlap joins and ii) automatic indexing; i.e. 
DT[column==values] is now ok (just for one ==, currently).

New homepage :

     https://github.com/Rdatatable/data.table/wiki

The old homepage on R-Forge will soon redirect to the new one (still 
some links/content to move over).

Fingers crossed!

Matt