setspacing option added
Merge pull request #293 from christophergandrud/master

`setspace` latex metadata added
quote value of PATH environment variable on Darwin (for spaces, etc.)
escape quotes in $PATH itself
sanitize escapes in the path
Merge pull request #296 from rstudio/bugfix/quote-path

Quote value of PATH environment variable on Darwin
serve just one R Markdown file if present
Merge pull request #299 from rstudio/feature/single-rmd

Serve just one R Markdown file if present
fix stop message
Merge pull request #300 from renkun-ken/patch-1

fix stop message
pdf: don't inject geometry when any other geometry field has been specified
correct a typo: "geometry:" should be text
bump version
serve content of index.html if it exists; user-specified defaults (#272)
Merge pull request #306 from rstudio/feature/index-html

Serve content of index.html if it exists; implement user-specified defaults (#272)
bump version
there is no need to construct the filename: x is just the filename
remove some invisible multibyte characters introduced by #293 (presumably copied from PDF)
Merge pull request #308 from yihui/cosmetic

A few trivial changes
sync to latest beamer template from pandoc-templates