Add NEWS for Geany 2.0

NEWS

@@ -1,12 +1,67 @@
 Geany 2.0 (unreleased)
+
+    General
+    * Split "session data" into session.conf, preferences are written to
+      and read from geany.conf (PR#2776, PR#2779, PR#3014, PR#3125 and more).
+    * Add new build system Meson (experimental) (PR#2761).
+    * Require GTK 3.24 (#3580).
+
+    Bug fixes
+    * (Re-)Add ability to scroll over document tabs (Luke Horwell, PR#3134).
+    * Fix keyword colorization on filetype change (PR#3553).
+    * Fix startup files order when placing tabs next to the current one
+      (PR#3611).
+
     Interface
     * The document list in the sidebar has a new tree view. This mode is the
       new default and existing installations automatically use it (PR#1813).
+    * Use dark-theme friendly colors for compiler messages (PR#3013).
+    * Add a confirmation dialog on search & replace for the whole session
+      (PR#3033).
+    * Filter entry for symbol tree (PR#3055).
+    * Simplify project creation from existing directories with sources
+      (PR#3042).
+    * Add option to show symbols in symbol tree without category groups
+      (PR#3172).
+    * Add option to only show line endings if they differ from file default
+      (PR#3287).
+    * Make tab label length and window title length configurable
+      (Abdul Rafey, #3365).
+    * Make Go to Symbol commands show signature list (PR#3475).
+
+    Editor
+    * Update Scintilla to 5.3.7 and Lexilla to 5.2.7 (PR#2867, PR#3551).
+    * Add "Change history" feature (disabled by default) (PR#3551).
+
+    Filetypes
+    * Sync many parsers from the Universal Ctags project, this leads to
+      updated symbol parsers (PR#2990, PR#2991, PR#3032).
+    * Improved support for the ctags file format, which is now the
+      recommended format for tags files (PR#3049).
+    * Update Kotlin filetype config (PR#3456).
+    * Apply Markdown header style to the complete header
+      (Robert Di Pardo, PR#3602).
+    * Update Nim filetype config (Zoom, PR#2988).
+    * Update PHP filetype config (PR#3488).
+    * Update Python filetype config (PR#3039).
+    * Add AutoIt filetype (Skif-off, PR#1752).
+    * Add GDScript filetype (David Yang, PR#3012).
+    * Remove Ferite filetype (PR#3075).
+    * Enable local variables and improve autocompletion for C/C++ and
+      some other languages (PR#3185, PR#3275).
+
+    Windows
+    * Remove native file and color dialogs on Windows, GTK dialogs will
+      be used instead (#3219).
+    * Use "Prof-Gnome" GTK theme by default (same theme as used on macOS)
+      for a better experience, the "Adwaita" theme can still be activated
+      (PR#3129).
 
     Internationalization
     * Updated translations: cz, da, de, fr, es, kk, lv, it, nl, pt, sk, ru, ua
     * Added translations: si
 
+
 Geany 1.38 (October 09, 2021)
 
     General