v2.0

API changes

• using PerlinNoise = BasicPerlinNoise<double>
• noise → noiseND
• noise0_1 → noiseND_0_1
• octaveNoise → accumulatedOctaveNoiseND
• octaveNoise0_1 → accumulatedOctaveNoiseND_0_1

New APIs / Improvements

• serialize / deserialize
• normalizedOctaveNoiseND
• normalizedOctaveNoiseND_0_1
• Supports C++20 concepts
• API refinements

Bug fixes

• accumulatedOctaveNoiseND_0_1 (octaveNoise0_1) no more returns value outside the range [-1, 1]