Batch Clipboard 2.3b1

• New feature: hold option key to show Start Batch with Clipboard, use if you cut/copy something then realize you in fact want a batch of several clips, it starts a batch with the first item being what's already on the clipboard.
• Added some concurrency safeguards between setting OS clipboard and polling to detect updates.
• New advanced checkbox to enable some debug logging.
• Improved behavior of clip history (if enabled) when collecting a batch, in some circumstances new clips would end up not being added to the history.
• Fixed behavior of temporarly recalling clips from the history when in the middle of pasting a batch, the next batch clip pasted with the assigned shortcut would re-paste the recalled clip instead of the next batch clip.
• Removed dependency on the package SDWebImage, not used since early betas of version 1.