Composer-Setup 4.6.0

• Improved unattended installation to suppress system error dialogs. The /PHP param now accepts a folder or exe location.
• Added automatic php.ini creation/modification. A new ini will be offered if one does not already exists, based on the user php.ini-production file. If an existing ini is missing required settings, Setup will offer to update it, having created a back-up.
• Added a Developer mode install option that allows users to install the Composer specific files where they want to, without including an uninstaller.
• Added /DEV=path\to\installation\folder param for unattended Developer mode installs
• Created a chocolatey package: https://chocolatey.org/packages/composer
• Many code tweaks and improvements.