Bug fixes

Enjoy larger paintings with maximum painting size of 6000x6000 pixels!

* New straight line feature. Enable in preferences. Change angle restriction steps with a long press on angle restriction button.
* Fixed reference image sampling offset bug on iPhones
* Many minor bug fixes under the hood

Fine-tuned Real Color Blending, Layer Effects and new tool settings
Improved Auto Trace and stroke recording scripts
Improved Air Brush and Drip Spread features
Improved localisatons
Other bug fixes.

Finetuning in Real Color Blending, Layer Effects and new tool settings,
Improved Auto Trace Color in stroke recording scripts,
Improved Air Brush Hardness and Drip Spread settings consistency,
Fixed localization inconsistencies,
Other bug fixes.

Fixed Scribble issues with sliders

Fixed eraser tool settings preview image
Other bug fixes