Change changelog format

CHANGELOG

@@ -1,10 +1,19 @@
-2021-01-15 Version 1.6.2
+#Changelog
+Format: Double ## for a version number followed by a space, ISO-Date, Semantic Versioning:
+## YYYY-MM-DD major.minor.patch
+Two empty lines before the next entry.
+External contributors notice at the end of the line: (LastName, FirstName / nick)
+
+
+## 2021-01-15 1.6.2
 Remove Nuitka as dependency. Build commands stay the same.
 
-2020-07-19 Version 1.6.1
+
+## 2020-07-19 1.6.1
 Hotfix for Qt floating dialogs
 
-2020-07-15 Version 1.6
+
+## 2020-07-15 1.6.0
 Fix menu command: quit under NSM (it did not quit)
 Create new UI which is more compact and easier to read
 Optionally play the test signal after each program change through the GUI
@@ -14,30 +23,35 @@ Fix crashes and problems with recent Qt 5.15 release
 Rename .desktop starter files according to XDG specs for easier packaging
 Improve internal debugging options and logging
 
-2020-04-15 Version 1.5
+
+## 2020-04-15 1.5.0
 Provide manpage
 Show loaded sf2 as NSM label
 Added convenience summing stereo-out jack ports.
 Better icons
 Removed git submodule. All code now in this repository.
 
-2019-11-15 Version 1.4.1
+
+## 2019-11-15 1.4.1
 Fixed a crash on startup
 Our real-time C library is now a shared lib, not a python module. Removes the need for packagers to rebuild every Python release.
 
-2019-10-15 Version 1.4
+
+## 2019-10-15 1.4.0
 Remove global jack transport stop on normal program exit
 Provide icons in all common sizes
 Submenus now have OK and Cancel buttons, not only shortcuts.
 Various bugfixes.
 
-2019-07-15 Version 1.3
+
+## 2019-07-15 1.3.0
 Remove strict Non Session Manager enforcement. Instead present a session directory chooser on startup, similar to --save.
 Remove videos from git repository for easier download and distribution. Videos are now only hosted on laborejo.org, but could be downloaded by users.
 Compilation without executable stack, a security risk.
 Various build system improvements.
 
-2019-04-15 Version 1.2
+
+## 2019-04-15 1.2.0
 Optional mode without NSM: Commandline parameter --save or -s. See --help
 In --save mode SIGUSR1 can be send to trigger a save.
 Now compatible with Fluidsynth version 2 (and still with version 1)
@@ -47,10 +61,12 @@ More reliable Qt settings.
 The --mute switch now works when running without installation and without a global calfbox module.
 Nuitka is now only necessary for installing system-wide. You can run 'make calfbox' and start locally afterwards.
 
-2019-01-15 Version 1.1
+
+## 2019-01-15 1.1.0
 Entire program is now based on a common Laborejo-Software-Suite shared program template.
 Added "Save" to menu
 Many fixes and optimisations in the C engine.
 
-2018-09-15 Version 1.0
+
+## 2018-09-15 1.0.0
 Initial Release

template/documentation/index.adoc.template

@@ -33,5 +33,6 @@ Please choose a language
 
 
 Further Links
+
 * https://laborejo.org/bugs/[Bug and Issues, and other Feedback]
 * Write to info@laborejo.org for any comment or question.