V1.3.0 Miharu - Better, Faster, Convenienter

Implemented some small quality of life features:

• Loading a chapter will open it at the page shown when it was saved.
• Chapter images are loaded asynchronously. This means chapters will load faster, but you may need to wait if your computer is slow and try to switch to a far away page that has not been loaded yet.
• Miharu will ask for the location of Tesseract if it can't find it in the default directory or the Windows PATH

You can check what tesseract executable Miharu is using on the new SessionLog.log file that it generates.

Fixed some bugs:

• Chapters are no longer marked as not saved when changing to some pages.
• Selection rectangles on page no longer persist when opening a different chapter when one was already open.
• Fixed a bug caused by having too many AutoReset signals (by using normal signals, which should have been done from the beggining...)