Bumped installer .net version

Implemented item inventories, additional node condition, bugfixes

Node multiselect, fullscreen node text editing, usability

.Net 6.0, Installer, Extended exporting, Utility functions

Wiki reviews, improved node system handling, node link annotations, a…

…utosaving and dirty state checks

Adjusted teaser image for state machine

Project switching, reference nodes, .Net 5.0

Bulk exporting of npc, item and skill values, bugfixing

New improved Exporting, NetCore 3.1, Bugfixing

Fixed capitalization for kirjamarker image