bundle outdated --strict
 Only reports newer versions that match dependency requirements
Better description of outdated --strict proposed by @indirect
add fork url to contributing section in README template to fix bundler/bundler#2665
Fix Bundler::which

Bundler::which doesn't return nil if the argument is a name of
directory.  This is because File::executable? returns true when its
argument is a name of directory.  I fixed it with File::file?.
close persistent connections before forking
ruby directive :patchlevel should only take a string
Add --jobs option for update command
Save the value of --jobs option into config file
Add tests for parallel update
fix update parallel spec
actually verify the parallel is actually doing things in parallel
update missing man pages
update changelog Version 1.5.0.rc.1
Version 1.5.0.rc.1