Build 0.2.4 - changed CG, minor fixes

Hi!

Our CG artist, Tintiai, made some changes to the CG with Rune included in the visual novel to make it more similar to his sprite. We have uploaded the new version of the visual novel that includes the changed CG, 0.2.4. No new content was added to this version.

Changelog:

• Changed CG by Tintiai
• Some typo and grammar fixes