Added forgotten known bug and new GUI feature

README.md

@@ -53,6 +53,7 @@
   * <kbd>Ctrl</kbd><kbd>P</kbd> to pause a model
   * <kbd>Ctrl</kbd><kbd>Z</kbd> to stop a model
 * An experimental LIVECHART Block is available in the GUI. Data is displayed in real time.
+* The color of links can be changed globally and single links can be hidden and made visible again.
 
 ### INSEL Engine
 
@@ -89,6 +90,7 @@
 * Text might not be readable in dark modes.
 * Name and parameters for userblocks might not be displayed correctly.
 * Underscores in filenames or function names might break documentation.
+* The "Build All" command does not compile Java classes and User Block Reference.
 * UB documentation PDFs are searched at the wrong location.
 * Simulink blocks have not been tested for years, and might be broken.