Updated changelog and minimum compiler requirements in the docs.

Changes.txt

@@ -19,6 +19,17 @@
     apply the properties to the ROM. [NOTE: this was present in 6.2, but
     was mistakenly left out of the changelog]
 
+  * Make NTSC custom phase shift not affect Yellow anymore.
+
+  * Allow changing palette adjustables in 1% steps again.
+
+  * Fixed some bugs in 3E+ scheme when using non-standard ROM sizes.
+
+  * Updated documentation for changes in ROM properties key names.
+
+  * The codebase now compiles under gcc6 again.  Future versions will
+    require gcc7, though.
+
 -Have fun!
 
 

docs/index.html

@@ -355,12 +355,11 @@
   <p>The Linux version of Stella is designed to work on a Linux Workstation with
   the following:</p>
   <ul>
-    <li>Linux Kernel 3.x</li>
     <li>i386 or x86_64 class machine, with 32 or 64-bit distribution</li>
     <li>OpenGL capable video card</li>
     <li>Other architectures (MIPS, PPC, PPC64, etc.) have been confirmed to work,
       but aren't as well tested as i386/x86_64</li>
-    <li>GNU g++ v/5 or Clang v/3.5 (with C++14 support) and the make utility are required for compiling the Stella source code</li>
+    <li>GNU g++ v/6 or Clang v/3.9 (with C++14 support) and the make utility are required for compiling the Stella source code</li>
   </ul>
 
   <p>