* 3.1.3

* added Colin as contributor

* Changes to wheezy

- Added wheezy as a FROM
- Update source list
- Added autotools-dev and automake for building littler
- Used Dockerfile from 3.1.0 for sys deps
- Install littler from tarball

* littler version via ARG

* RStudio Server v1.2.1335 (and latest from now on) new path

* install new dependecies for RStudio Server: libclang-dev

* put new apt packges on their own lines

* one-liner if/then/else for the RStudio Server download URL

* fix if/then

* add missing semicolon

closes #129

* parallel libs

* apparently my vimrc no longer includes coercing tabs to spaces

Add rJava to verse

Only install shiny and rmarkdown if needed

Just a tiny build efficiency tweak

fix partially-matched arg in install.packages call