Removed async methods from FileDownloader, UpdaterClient, and UpdaterTest
Don't require admin privileges when running Setup; install to user's AppData dir if not running as admin
Write uninstall registry settings to HKLM when running as admin, and HKCU when running as non-admin
Delete empty AppData directories
Added half-finished "Portable" setup options page and removed "Welcome" page
Updated plugin path in merge.bat
Removed old unused line from set.iss
Nearly finished w/ "Portable" option in installer - just need to stop the Start Menu shortcuts from being created
Added AlwaysShowDirOnReadyPage=yes to setup.iss
Finished "Portable" install type in setup.iss: Wizard pages are automatically skipped depending on user selection and existing installation