Add host parameter to install_github.
Closes #506. Fixes #410
News reorg
Don't munge UNC paths. Closes #522.
Insulate build(binary = T) further.
Closes #557
Check for dev dependencies.
Closes #534
Fix arg name
Updates for reverse dependency checks
incomplete rebase of 350-install-github to current master

original: 9f8284068812f89
move code around
add test
install latest release using user/repo@*release instead of user/repo@*
cosmetic: remove executable bit
cosmetic: spurious Rd file change