Update changelog in preparation for htop-3.2.2 release

ChangeLog

@@ -1,3 +1,43 @@
+What's new in version 3.2.2
+
+* CPUMeter now can show frequency in text mode
+* Add option to render distribution path prefixes shadowed
+* DiskIOMeter converts to bytes per second (not per interval)
+* DiskIOMeter uses complete units, including missing "iB/s"
+* DiskIOMeter indicates read and write in meter mode
+* NetworkIOMeter converts to packets per second, shows packet rate
+* Allow continued process following when changing display settings
+* Update the panel header when changing to another tab
+* Drop margin around the header if there are no meters
+* Use Unicode replacement character for non-printable characters
+* Default color preset uses bold blue for better visibility
+* Update the Panel header on sort order inversions ('I')
+* Toggle the header meters with pound key
+* Fix ScreenPanel to handle quitting the panel while renaming
+* Add fallback for HOME environment variable using passwd database
+* Replace meaningless ID column with FD column in lock screen
+* Use device format in the lock screen matching the files screen
+* On Linux, improvements to file-descriptor lock detection
+* On Linux, further distinguish systemd states in the SystemdMeter
+* On Linux, improvements to cgroup and container identification
+* On Linux, support openat(2) without readlinkat(2) platforms
+* On Darwin, fix current process buffer handling for busy systems
+* On DragonFly BSD, fix incorrect processor time of processes
+* On FreeBSD, fix an issue with the memory graph not showing correctly
+* On FreeBSD, add support for displaying shared memory usage
+* On PCP, use pmLookupDescs(3) if available for efficiency
+* On PCP, normalize generic columns values for consistent display
+* On PCP, changes preparing for configurable, dynamic screens
+* Handle invalid process columns from the configuration file
+* Avoid undefined behaviour with deeply nested processes
+* Fix crash when removing the currently active screen
+* Prevent possible crash on a very early error path
+* Include automake for Debian/Ubuntu
+* Restore non-mouse support
+* Reject unsupported command line arguments
+* Document idle process state
+* Clarify M_TRS/M_DRS columns
+
 What's new in version 3.2.1
 
 * Fix setting to show all branches collapsed by default