Support for TinyMT32

This release adds support for TinyMT32 (Tiny Mersenne Twister, 32 bit variant)

Initial version, with support for PCG32

Features:

• rng: supports creation of pcg32 instance with random seed (based on entropy)
• rng: supports creation of pcg32 instance with initial state and increment seed
• pcg32 instance supports: seed, number, double_num, range, double_range, toss and roll