Add option-click to open a link in the background
Fix multi-line URLs (breaked by terminal with "\\\r"), by removing "\\\r"
Ability to open multiple URLs all at once when they are chosen
Add localizations to "Open multiple URLs" menu title
Checker added in Preferences -> General window
Checker binded to GlobalConfig.shouldPreferImagePreviewer
GlobalConfig.shouldPreferImagePreviewer is set to YES by default (without a key)
Modify flag-checking in YLView corresponding to the preference setting feature
If the previewer is preferred in Preferences, ctrl+click opens a browser window
(same as the behavior when the preference was not added)
If the previewer is not preferred, simple mouse click opens a browser window;
ctrl+click opens the previewer
URL blocks are now seperated by an NSCharacterSet including ' ' and '\r'
The '\r' character takes care of the previously used line-seperation function
The ' ' character splits a line into individual blocks of (potentially) URLs