v0.3.0

• Add the Polynomial class for arithmetic with fixed-length polynomials
• Change the class TruncatedFinitePadicExpansion for carrying all computations over fixed-length polynomials reduced modulo p
• Add the third type of supported Hensel code: the truncated finite-segment g-adic Hensel code.
• Add GAdicBase as the parent class of TruncatedFiniteGadicExpansion.
• Allow converting a finite-segment p-adic Hensel code into a truncated p-adic Hensel code.
• Add the Chinese Remainder Theorem algorithm (CRT) to the module Tools
• Improve helpers for generating distinct random numbers (integers, primes, and rationals)
• Add the inverse function for all three currently supported types of Hensel codes
• Overall improvements in the code