Update changes.

src/syncterm/CHANGES

@@ -10,6 +10,12 @@ Fix CSI ? s and CSI ? n
 Update to Cryptlib 3.4.4
 Ignore unsupported APC, DCS, OSC, PM, and SOS strings
 Add support for the palette redefinition/reset OSC commands from xterm
+Use XTerm 256-color palette
+Support XTerm style palette color selection
+Support Sixel graphics
+RLogin using the "current" speed was missing a terminating NUL
+Added CSI < Ps c command for extended attributes
+Added CSI ? Ps1 ; Ps2 S to query graphics canvas size
 
 Version 1.0
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