v2.3.0 - Install & Upgrade

This is the first version capable of self-installing and self-upgrading from CLI options.
Both routines may ask for confirmation.
There is currently no way to force yes on those confirmations (will be implemented later).

Installation

• Use the option --install or --self-install
• Defaults to /usr/local/bin/pdfscale
• Custom location can be specified, eg. --install /home/user/bin/pdfscale
• Will ask to retry with sudo if it fails the first time

Upgrading

• Use option --upgrade or --self-upgrade
• Downloads current master on /tmp and prints version comparison
• Will ask for confirmation
• Target install is the location of the running pdfScale
• Will ask to retry with sudo when it first fails

So Version 2.3.0 is the lowest version people should have in order to self-upgrade.