updating the ChangeLog.

ChangeLog

@@ -12,10 +12,49 @@ or
 
 https://bitbucket.org/muonspin/musrfit
 
+Changes since V1.12.1 (not yet released)
+========================================
+
+New features / improvements:
+musrview, musrFT, musrt0: show their own window/dock icon instead of the generic
+ROOT one (on macOS set via Cocoa). The .desktop files and icons (incl. musredit)
+are now installed to MUSRFIT_XDG_DATADIR, which defaults to the prefix share for
+/usr and /usr/local, ~/.local/share for prefixes under $HOME, and /usr/local/share
+otherwise.
+msr2data: the number of threads to be used can be passed on to musrfit from the
+command line. musredit uses the 'number of threads' set in its preferences also
+for msr2data.
+musredit: add the <use_no_of_threads> tag to musredit_startup.xml if it is missing
+and the preferences are saved. Improve terminating a running fit (qt5/qt6).
+Reduce the number of 'NEGATIVE theory' warnings in max. likelihood fits of single
+histogram and mu-minus data.
+Add the HDF4 library version to the configure output.
+
+Bug fixes:
+musrt0 -g: handle msr-files with a GLOBAL block. If t0/addt0 is given in the
+GLOBAL block, only a warning is issued and the msr-file is left untouched.
+musrFT: fix the Fourier canvas on macOS (lost signal/slot connections with
+ROOT 6.40 / macOS SDK 26+), and starting musrFT from musredit when started from
+the Finder/Dock. musrFT is now run in the directory of the msr-file.
+HDF4 4.4.0 changed the Vgetname() prototype. Both the old and the new form are
+detected and supported.
+Several executables reported the wrong exit status (success on failure or vice
+versa).
+msr2data: strip the separator when removing the run-number suffix from parameter
+names.
+
+Tests:
+Add an LSCO ZF asymmetry example (ROOT-NPP, LEM) to the ctests.
+
 Release of V1.12.1, 2026/08/25
 ==============================
 
 Improve the Fourier transform part. This leads to speedups of about a factor of 5.
+Allow initial comments in dat-files.
+
+Bug fixes:
+msr2data in global+ mode: fix 'possible msr2data in global+ mode bug' (gitea bug
+report #16), and pass the musrfit arguments on (gitea bug report #17).
 
 Release of V1.12.0, 2026/07/22
 ==============================