Large update. Added new smoothing filters - SmoothMedian, SmoothConservative - and adjusted smoothing in some generators; Added new procedural generators: cosine, cosine-layered, fault lines, hill composition, hill-island, particle deposition; Adjusted demo to support new generators; Improved the Hill influence shape; Added the Dome influence shape; Fixed influences failing if they reached outside of the terrain; Adjusted README and roadmap to reflect these changes