Fix some text-incoding inconsistencies (#77, thanks @musicinmybrain)

* Convert example/16-trompeloeil-runtime.cpp to UTF-8

* Fix some transcoding glitches in CHANGES.txt

This file is UTF-8, but some characters were munged during transcoding
at some point, leading to replacement character U+FFFD (UTF-8 byte
sequence EF BF BD) appearing at several points.

This commit reconstructs the original intended characters.

CHANGES.txt

@@ -1,4 +1,4 @@
-Changes for lest � lest errors escape testing
+Changes for lest – lest errors escape testing
 
 version 1.35.2 2023-12-28
 
@@ -48,7 +48,7 @@ This bug-fix release fixes reporting of sections, issue #65. Thanks to @onthetop
 
 version 1.33.2 2018-08-28
 
-This bug-fix release suppresses the warning message unused parameter �lest_env� [-Werror=unused-parameter] with lest_cpp03.hpp. Further the style of #if defined has been changed to use parentheses. For the rest, lest.hpp is unchanged.
+This bug-fix release suppresses the warning message unused parameter ‘lest_env’ [-Werror=unused-parameter] with lest_cpp03.hpp. Further the style of #if defined has been changed to use parentheses. For the rest, lest.hpp is unchanged.
 
 version 1.33.1 2018-04-30
 

example/16-trompeloeil-runtime.cpp

@@ -1,7 +1,7 @@
 // C++14 - use lest with trompeloeil mocking framework (runtime adaptation).
 
 // Trompeloeil, thread-safe single-file header-only C++14 mocking framework,
-// by Björn Fahller (@rollbear), https://github.com/rollbear/trompeloeil
+// by Björn Fahller (@rollbear), https://github.com/rollbear/trompeloeil
 
 #include "lest/lest.hpp"
 #include "trompeloeil.hpp"