Explain what has become of separate-front-target-dir

The change in leptos-rs#216 was not actionable and contradicted the way the
option was documented in the README.

See leptos-rs#203 and leptos-rs#217.

README.md

@@ -191,7 +191,7 @@ lib-profile-dev = "my-debug-profile"
 
 # Fixes cargo bug that prevents incremental compilation (see #203)
 #
-# Optional. Defaults to false
+# Optional. Defaults to false prior to 0.2.3, unconditionally enabled (with the setting becoming deprecated) since 0.2.3 and #216
 separate-front-target-dir = true
 
 # Pass additional parameters to the cargo process compiling to WASM

src/config/project.rs

@@ -195,7 +195,7 @@ pub struct ProjectConfig {
     pub tmp_dir: Utf8PathBuf,
 
     /// Deprecated. Keeping this here to warn users to remove it in case they have it in their config.
-    #[deprecated = "This option is deprecated. Please remove it from your config."]
+    #[deprecated = "This option is deprecated since cargo-leptos 0.2.3 (when it became unconditionally enabled). You may remove it from your config."]
     pub separate_front_target_dir: Option<bool>,
 
     // Profiles
@@ -259,8 +259,8 @@ impl ProjectConfig {
 
         #[allow(deprecated)]
         if conf.separate_front_target_dir.is_some() {
-            log::warn!("Depreciated the `separate-front-target-dir` option is deprecated");
-            log::warn!("Depreciated please remove it from your config in your Cargo.toml")
+            log::warn!("Deprecated: the `separate-front-target-dir` option is deprecated since cargo-leptos 0.2.3");
+            log::warn!("It is now unconditionally enabled; you can remove it from your Cargo.toml")
         }
 
         Ok(conf)