nakagami 1.2.0

• Fix pnaka() for negative quantiles in both tails and on the log scale.
• Fix dnaka() below zero and at zero and infinity. At zero the density is infinite for shape < 0.5, sqrt(2 / (pi * scale)) for shape = 0.5, and zero for shape > 0.5.
• Recycle quantiles, probabilities, shape and scale independently. Previously, combining shape and scale before recycling could silently give wrong results.
• Use a unit-rate Gamma transformation and log-scale calculations to avoid intermediate overflow and underflow, including in very small probabilities and quantiles.
• Allow zero random draws and empty input vectors. Reject missing or infinite parameters and missing logical flags with clear errors. Shape and scale remain strictly positive; invalid parameter vectors still cause errors.
• Remove the assertthat runtime dependency and warning-suppression machinery.
• Simplify the quantile implementation, build exclusions and GitHub Actions workflow. Remove obsolete VGAM benchmarks and unused covr suggestion.
• Clarify the scale parameter and log-density documentation.
• Replace the package logo with a black-and-white hex sticker.