# Changelog

## v2.0.0 (2017-01-06)

- After many months of v2 being in an RC state with many companies and users running it in
production, the inclusion of some improvements to the middlewares, we are very pleased to
announce v2.0.0 of chi.


## v2.0.0-rc1 (2016-07-26)

- Huge update! chi v2 is a large refactor targetting Go 1.7+. As of Go 1.7, the popular
community `"net/context"` package has been included in the standard library as `"context"` and
utilized by `"net/http"` and `http.Request` to managing deadlines, cancelation signals and other
request-scoped values. We're very excited about the new context addition and are proud to
introduce chi v2, a minimal and powerful routing package for building large HTTP services,
with zero external dependencies. Chi focuses on idiomatic design and encourages the use of 
stdlib HTTP handlers and middlwares.
- chi v2 deprecates its `chi.Handler` interface and requires `http.Handler` or `http.HandlerFunc`
- chi v2 stores URL routing parameters and patterns in the standard request context: `r.Context()`
- chi v2 lower-level routing context is accessible by `chi.RouteContext(r.Context()) *chi.Context`,
  which provides direct access to URL routing parameters, the routing path and the matching
  routing patterns.
- Users upgrading from chi v1 to v2, need to:
  1. Update the old chi.Handler signature, `func(ctx context.Context, w http.ResponseWriter, r *http.Request)` to
     the standard http.Handler: `func(w http.ResponseWriter, r *http.Request)`
  2. Use `chi.URLParam(r *http.Request, paramKey string) string`
     or `URLParamFromCtx(ctx context.Context, paramKey string) string` to access a url parameter value


## v1.0.0 (2016-07-01)

- Released chi v1 stable https://github.com/pressly/chi/tree/v1.0.0 for Go 1.6 and older.


## v0.9.0 (2016-03-31)

- Reuse context objects via sync.Pool for zero-allocation routing [#33](https://github.com/pressly/chi/pull/33)
- BREAKING NOTE: due to subtle API changes, previously `chi.URLParams(ctx)["id"]` used to access url parameters
  has changed to: `chi.URLParam(ctx, "id")`