Version 1.07 release notes

In the lead-up to the releases of A Dragon's Treasure and Man And Elf, I went back over the original Sable's Grimoire from top to bottom, making notes and checking for consistency with the new games.

This process wound up taking significantly longer than expected. I found a number of things in the original which I felt could be improved, or which were just plain wrong.

The end result of this is version 1.07 (and version 1.01 of the demo), which contains the following additions and changes:
-aether vision and gravity spell animations replaced with new backgrounds
-2 new item images added
-cover artwork added to the music page
-lots of nit-picky rewording
-typo fixes
-consistency fixes
-additional explanations added in some places
-changes to mature content setting
-improved readability on a couple of GUI elements
-smoother music transitions
-animation setting replaced (now that the animations have been removed) with the previously removed "After Choices" skip preference
-fixed two expressions not loading correctly at the end of Eth/Rei's route
-Android version now works on more platforms and has better performance on newer devices