Support multiple image paths

This release supports multiple image paths, including wildcards (*) - to bulk resize images to multiple sizes at once.

Examples:
./resizer images/* 1024x1024
./resizer img1.png img2.png 512x512 1024x1024

Full Changelog: 1.0.1...1.1

Test release

This is a test release to test automatically building with Go

Initial release

1.0

Increment tag