use typed NSApplication rather than untyped NSApp for accessing Cocoa shared application
Revert previous OS X 10.10 Yosemite PATH workarounds
fix duplicated $PATH in OS X Yosemite
copy rather than move pandoc static binaries
Fix RPubs upload error "invalid 'n' argument"
linux: dynamic link to gcc runtime
custom rendering for checkbox inputs on OS X Yosemite