Libautoupdate v0.2.0

• Auto-update shall only run once in every 24 hours with help of the file ~/.libautoupdate
• add argument force to autoupdate() in order to force an auto-update check
• add CI to test autoupdate()
• fix failures to replace itself when TMPDIR and current file is not on the same volume
• #1

v0.1.0

Initial release.