use transparent bg color
correctly invoke matchAvailableTopics for R 3.0
R 3.0: install rstudio and manipulate packages from source
refinements to source package installation
use linked google fonts and mathjax when publishing to rpubs
move presentation functions to .rs. namespace
correctly escape paths for rstudio package install
Revert "use transparent bg color"

This reverts commit 7a65519761bcb9f14f4949548c72bebc14aa5824.
initial work on presentation log
write to presentation log file
Merge branch 'feature/presentation-log'
update to gwt 2.5.1
set bg = transparent for graphics device; turn off shadow device for newPage
R 3.0: correctly restore native symbols for plots; provide distinct scratch directory
ensure columns are double or character before viewing
save project relative path