Add Logger::close and clarify what close and reset do plus

src/Monolog/Logger.php

@@ -354,6 +354,35 @@ class Logger implements LoggerInterface, ResettableInterface
         return true;
     }
 
+    /**
+     * Ends a log cycle and frees all resources used by handlers.
+     *
+     * Closing a Handler means flushing all buffers and freeing any open resources/handles.
+     * Handlers that have been closed should be able to accept log records again and re-open
+     * themselves on demand, but this may not always be possible depending on implementation.
+     *
+     * This is useful at the end of a request and will be called automatically on every handler
+     * when they get destructed.
+     */
+    public function close()
+    {
+        foreach ($this->handlers as $handler) {
+            if (method_exists($handler, 'close')) {
+                $handler->close();
+            }
+        }
+    }
+
+    /**
+     * Ends a log cycle and resets all handlers and processors to their initial state.
+     *
+     * Resetting a Handler or a Processor means flushing/cleaning all buffers, resetting internal
+     * state, and getting it back to a state in which it can receive log records again.
+     *
+     * This is useful in case you want to avoid logs leaking between two requests or jobs when you
+     * have a long running process like a worker or an application server serving multiple requests
+     * in one process.
+     */
     public function reset()
     {
         foreach ($this->handlers as $handler) {