Various cleanups to documentation and snapshots:

- Changelog updated for recent fixed from Thomas J.
- Minor formatting fixes in TIASurface class
- Updated documentation for 'ss1x' mode; snapshots now have only scaling disabled, not effects removed
- Updated snapshots for change in ss1x, and also ran them all through pngcrush, to optimize size

Changes.txt

@@ -14,6 +14,9 @@
 
 5.0.2 to 5.0.3: (August xx, 2017)
 
+  * Huge improvements to the disassembly view in the debugger:
+    - TODO: add items ...
+
   * Fixed Genesis controller autodetect (Stay Frosty 2, Scramble, etc).
 
   * Fixed a bug in ystart autodetection that could cause screen jumps.
@@ -35,8 +38,13 @@
     information).  In the case of 'saveses', the filename is now named
     based on the date and time of when the command was entered.
 
-  * Fixed bug with saving snapshots in 'filtering disabled' mode; there
+  * Fixed bug with saving snapshots in 1x mode; there was graphical
-    was graphical corruption in some cases.
+    corruption in some cases.  Such snapshots also now include any TV
+    effects / phosphor blending currently in use.
+
+  * Fixed regular-sized snapshots when phosphor effect was enabled;
+    sometimes the image was 'double-blended', resulting in a snapshot that
+    was too dark.
 
   * Added debugger pseudo-register '_fcycles', which gives the number of
     CPU cycles that have occurred since the frame started.

docs/index.html

@@ -2607,7 +2607,7 @@
           <tr><td>Save snapshots according to</td><td>specifies how to name saved snapshots</td><td>-snapname</td></tr>
           <tr><td>Continuous snapshot interval</td><td>interval (in seconds) between snapshot</td><td>-ssinterval</td></tr>
           <tr><td>Overwrite existing files</td><td>whether to overwrite old snapshots</td><td>-sssingle</td></tr>
-          <tr><td>Disable image filtering (1x mode)</td><td>save snapshot in 1x mode, without filtering</td><td>-ss1x</td></tr>
+          <tr><td>Ignore scaling (1x mode)</td><td>save snapshot in 1x mode, without scaling</td><td>-ss1x</td></tr>
         </table>
       </td>
     </tr>

src/gui/SnapshotDialog.cxx

@@ -111,7 +111,7 @@ SnapshotDialog::SnapshotDialog(OSystem& osystem, DialogContainer& parent,
   // Snapshot in 1x mode (ignore scaling)
   ypos += mySnapSingle->getHeight() + 4;
   mySnap1x = new CheckboxWidget(this, font, xpos, ypos,
-                                "Disable image filtering (1x mode)");
+                                "Ignore scaling (1x mode)");
   wid.push_back(mySnap1x);
 
   // Add Defaults, OK and Cancel buttons