Deprecate throttle-output and throttle-output-for

The eventloop no longer uses them. libuv will coalesces multiple
uv_async_send if they happen one after another and this also leads to
coalescing of updates.

CHANGELOG.md

@@ -51,8 +51,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   repository.
 - The `POLYBAR_FLAGS` cmake variable can be used to pass extra C++ compiler flags.
 
+### Deprecated
+- `[settings]`: `throttle-output` and `throttle-output-for` have been removed.
+  The new event loop already does a similar thing where it coalesces update
+  triggers if they happen directly after one another, leading to only a single
+  bar update.
+
 ### Added
-- `internal/memory`: New tokens `%used%`, `%free%`, `%total%`, `%swap_total%`, 
+- `internal/memory`: New tokens `%used%`, `%free%`, `%total%`, `%swap_total%`,
   `%swap_free%`, and `%swap_used%` that automatically switch between MiB and GiB
   when below or above 1GiB.
   ([`2472`](https://github.com/polybar/polybar/issues/2472))

include/components/config.hpp

@@ -182,6 +182,8 @@ class config {
     return default_value;
   }
 
+  void ignore_key(const string& section, const string& key) const;
+
   /**
    * Attempt to load value using the deprecated key name. If successful show a
    * warning message. If it fails load the value using the new key and given

src/components/config.cpp

@@ -56,6 +56,12 @@ void config::set_included(file_list included) {
   m_included = move(included);
 }
 
+void config::ignore_key(const string& section, const string& key) const {
+  if (has(section, key)) {
+    m_log.warn("The config parameter '%s.%s' is deprecated, it will be removed in the future. Please remove it from your config", section, key);
+  }
+}
+
 /**
  * Print a deprecation warning if the given parameter is set
  */

src/components/controller.cpp

@@ -47,15 +47,11 @@ controller::controller(connection& conn, signal_emitter& emitter, const logger&
     , m_conf(config)
     , m_bar(forward<decltype(bar)>(bar))
     , m_ipc(forward<decltype(ipc)>(ipc)) {
-  if (m_conf.has("settings", "throttle-input-for")) {
-    m_log.warn(
-        "The config parameter 'settings.throttle-input-for' is deprecated, it will be removed in the future. Please "
-        "remove it from your config");
-  }
-
-  // TODO deprecate both
-  m_conf.deprecated("settings", "eventqueue-swallow", "throttle-output", 0);
-  m_conf.deprecated("settings", "eventqueue-swallow-time", "throttle-output-for", 0);
+  m_conf.ignore_key("settings", "throttle-input-for");
+  m_conf.ignore_key("settings", "throttle-output");
+  m_conf.ignore_key("settings", "throttle-output-for");
+  m_conf.ignore_key("settings", "eventqueue-swallow");
+  m_conf.ignore_key("settings", "eventqueue-swallow-time");
 
   m_log.trace("controller: Setup user-defined modules");
   size_t created_modules{0};

src/components/eventloop.cpp

@@ -1,5 +1,7 @@
 #include "components/eventloop.hpp"
 
+#include <cassert>
+
 POLYBAR_NS
 
 /**