Separate ecosystem lists (#1942)

docs/ecosystem.md

@@ -11,10 +11,17 @@ Please send a PR to add new modules!
 <a id="core"></a>
 ## Core
 
+### Frameworks
 + [`express-pino-logger`](https://github.com/pinojs/express-pino-logger): use
 Pino to log requests within [express](https://expressjs.com/).
 + [`koa-pino-logger`](https://github.com/pinojs/koa-pino-logger): use Pino to
 log requests within [Koa](https://koajs.com/).
++ [`rill-pino-logger`](https://github.com/pinojs/rill-pino-logger): use Pino as
+the logger for the [Rill framework](https://rill.site/).
++ [`restify-pino-logger`](https://github.com/pinojs/restify-pino-logger): use
+Pino to log requests within [restify](http://restify.com/).
+
+### Utilities
 + [`pino-arborsculpture`](https://github.com/pinojs/pino-arborsculpture): change
 log levels at runtime.
 + [`pino-caller`](https://github.com/pinojs/pino-caller): add callsite to the log line.
@@ -54,10 +61,6 @@ to standard syslog format.
 based upon log levels.
 + [`pino-toke`](https://github.com/pinojs/pino-toke): reformat Pino logs
 according to a given format string.
-+ [`restify-pino-logger`](https://github.com/pinojs/restify-pino-logger): use
-Pino to log requests within [restify](http://restify.com/).
-+ [`rill-pino-logger`](https://github.com/pinojs/rill-pino-logger): use Pino as
-the logger for the [Rill framework](https://rill.site/).
 + [`pino-test`](https://github.com/pinojs/pino-test): a set of utilities for 
 verifying logs generated by the Pino logger.