Bump version to v1.7.0, consolidate changelog for release

Merge v1.6.1 fixes into v1.7.0 changelog (no v1.6.1 tag was released).
Update CMakeLists.txt and About Flynn version strings.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ecliptik

CHANGELOG.md

@@ -21,14 +21,6 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 - Remote disconnect preserves terminal screen content (was wiped by terminal_reset)
 - Window repaint after disconnect alert restores terminal content in all modes
-
-### Removed
-- Dead conn_open_dialog() from connection.c
-- 6 unused TCP wrapper functions from tcp.c (~256 lines)
-
-## [1.6.1] - 2026-03-10
-
-### Fixed
 - MacTCP.h: add forward declarations for struct GetAddrParamBlock,
   ICMPParamBlock, TCPiopb, and UDPiopb to eliminate "declared inside
   parameter list" compiler warnings
@@ -38,6 +30,10 @@ All notable changes to this project will be documented in this file.
 - MacTCP.h: convert from classic Mac CR to Unix LF line endings for
   consistent cross-platform source formatting
 
+### Removed
+- Dead conn_open_dialog() from connection.c
+- 6 unused TCP wrapper functions from tcp.c (~256 lines)
+
 ## [1.6.0] - 2026-03-10
 
 ### Added

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.9)
-project(Flynn VERSION 1.6.1)
+project(Flynn VERSION 1.7.0)
 
 add_application(Flynn
     src/main.c

docs/About Flynn

@@ -1,7 +1,7 @@
 =====================================================
                       Flynn
               Telnet Client for Macintosh
-                    Version 1.6.0
+                    Version 1.7.0
 =====================================================
 
 Connect your classic Macintosh to the modern world.