v0.7 Experimental

• added options UI
• improved loading of workshop item data, including showing the size of items
• overhauled progress output to be more informative and concise
• added file logging as a replacement for the showConsole option
• added status checks; automatically re-adds failed items to the input
• added a warning when trying to download items anonymously that probably don't support that

Please provide feedback concerning the changes, and possible further improvements.