Auto merge of #15 - jonas-schievink:truncate-tempfiles, r=kbknapp
Auto merge of #15 - jonas-schievink:truncate-tempfiles, r=kbknapp

Truncate temporary files instead of deleting, then recreating them

This makes cargo-outdated work (better?) on Windows. Previously, it failed with a "permission denied" error for me, which was presumably caused by the files not being deleted immediately by Windows.

Since `File::create` truncates existing files, the behavior should be the same as before.

kbknapp/cargo-outdated