Initial work on actor-usable Techniques (special moves, psychic abilities, secret recipes, et cetera.)  Also some refactoring of skill access.
Fixes for bugs in road-paving behaviour, plus some method renames.
New work on techniques and their special FX.
case sensitive paths fix
Merge pull request #1 from Ksienrzyc/development

case sensitive paths fix
A good deal of work on fixing up combat after recent work on techniques, plus some new models.
Small modification to plan behaviour (to specify whether they should be kept as ‘todo’ or not if interrupted.)
Merge branch 'development' of https://github.com/Morgan-Allen/Presidium-Graphics-Overhaul into development
Fixes for Technique evaluation and application.
Assorted cleanup for media loading, plus changes to building-placement and initial work on new fortification-placement scheme.
More work on shield walls placement.
Restored blast door functions to shield walls, and added small fix for additive blending getting mixed in outside of the FX pass.
Minor tweaks, plus group-deletion for shield wall sections
Small fixes for buildings’ claim-resolution and loading crash.  Update to solar-bank placement.
Various small tweaks and fixes, especially a fix for import/export levels from offworld.
Some changes to method signatures for plan-priority evaulation, initial work on archives and physician economics, and various fixes for combat behaviour and damage mechanics.
Added models for the Yamagur and Roachman, courtesy of Pawel/Gorion
Fix for potential bug in target selection for combat, and expanded/fixed range of possible resting locations.
An assortment of bug fixes and refactorings, particularly for farming and exploration behaviours.
Restored use of seed-stocks to plant nurseries.