Update CHANGES.

CHANGES

@@ -5,12 +5,19 @@
 #### v1.7.4
 
 - Changed searching for color themes and custom prompts to always include `themes\` directories under the Clink program directory and Clink profile directory, even when the `clink.path` setting has been used to remove them from the list of script directories.
+- Improved emoji width measurements.
+  - Unqualified emoji are counted as a single cell now.  Windows Terminal intentionally renders these as a single cell for compatibility with the behavior of the first terminal programs on Linux that began to support emoji characters (an important compatibility detail for the Windows Subsystem for Linux, for example).
+  - Country flag emoji character pairs are recognized.
+  - Skin tone variant selectors are recognized.
+  - The zero width joiner is recognized when it joins two emoji characters, or an emoji and a male or female symbol.
+  - **NOTE:**  A given OS version and terminal program version will only recognize certain combinations of joined emoji as valid sequences.  And Windows Terminal is one of the only terminal programs on Windows that can draw color emoji characters.  Clink has no way to know how a given terminal will actually render sequences of Unicode emoji characters.  If a terminal program renders a particular emoji sequence differently than Clink predicts, then the display may become garbled.  If that happens, don't use that emoji sequence.  But if a terminal program renders an emoji sequence as a single glyph and Clink predicts the width incorrectly, then please open an issue with details about the emoji.
 - The pure.clinkprompt now also supports virtualenv's `VIRTUAL_ENV_DISABLE_PROMPT` and `VIRTUAL_ENV_PROMPT` environment variables.
 - Fixed the right side transient prompt so it shows up even when identical to the right side normal prompt.
 - Fixed the `demo` callback in .clinkprompt files.
+- Fixed potential for incomplete input of Unicode surrogate pairs.  An easy way to encounter the problem was using the Windows emoji picker to input an emoji that's a sequence of other emojis joined together -- for example, the pride flag emoji is a flag emoji joined with a rainbow emoji, and the rainbow emoji uses a surrogate pair.
 - Fixed [#685](https://github.com/chrisant996/clink/issues/685); CTRL-L while input text is present redraws the input line wrong.
 - Fixed [#686](https://github.com/chrisant996/clink/issues/686); `clink config -h` shows inaccurate info.
-- Fixed [#696](https://github.com/chrisant996/clink/issues/696); console width length off-by-one on certain characters (in particular U+26A1).  Character width measurements have been improved for various color emoji; in particular, unqualified emoji should now be counted as a single cell, width predictions have been updated for Windows 11, and skin tone selectors should generally work for emoji that don't involve other joiners or selectors.  This requires that the terminal program supports color emoji; Windows Terminal supports color emoji, but many other terminal programs don't and may behave strangely when emoji are present.
+- Fixed [#696](https://github.com/chrisant996/clink/issues/696); console width length off-by-one on certain characters (in particular U+26A1).
 
 #### v1.7.3