JuliaAlgebra/MultivariatePolynomials.jl: v0.4.0

MultivariatePolynomials v0.4.0 Diff since v0.3.18 Closed issues: should promote_type ever error? (#170) gcd((d + g*d), (d^2)) fails (#173) No method for div(::Poly, ::Integer) (#179) Merged pull requests: Update det.jl (#168) (@Timeroot) Narrow convert methods to reduce invalidations (#172) (@timholy) Fix deflection of monomial (#174) (@blegat) Fix gcd with zero (#177) (@blegat) Implement univariate extended gcd (#178) (@blegat) Implement div with Number (#180) (@blegat) Update to MutableArithmetics v0.3 (#181) (@blegat