integrate 0.2.0

Small, lightweight Rust library for performing numerical integration.
Documentation
# Summary

[Overview](./overview.md)

- [Getting Started]./getting_started.md

- [Newton-Cotes method]./newton-cotes.md

  - [Rectangle rule]newton_cotes/rectangle_rule.md
  - [Trapezoidal Rule]newton_cotes/trapezoidal_rule.md
  - [Simpson's Rule]newton_cotes/simpson_rule.md
  - [Newton's 3/8 Rule]newton_cotes/newton_rule.md

- [Gaussian quadrature]./gaussian_quadrature.md

  - [Gauss Legendre]gauss_quadrature/gauss_legendre.md
  - [Gauss Chebyshev]gauss_quadrature/gauss_chebyshev.md
  - [Gauss Laguerre]gauss_quadrature/gauss_laguerre.md
  - [Gauss Hermite]gauss_quadrature/gauss_hermite.md

- [Adaptive quadrature]./adaptive_quadrature.md

  - [Adaptive Simpson]adaptive_quadrature/adaptive_simpson.md

- [Romberg's method]./romberg.md

- [Python API]./python_api.md