Update revisions.txt

Author: facchinm

build/shared/revisions.txt

@@ -5,6 +5,11 @@ ARDUINO 1.8.4
 * Environment variable LIBRARY_INDEX_URL is now correctly parsed (LIBRARY_INDEX_URL_GZ can also be optinally specified). Thanks @xardael
 * Added per-board generic option in config file boards.txt for disabling control of dtr+rts. Thanks @d-a-v
 * CLI: fixed missing "runtime.platform.path" when running without the `--board` option
+* Linux: fixed desktop icon not launching the IDE in certain Window Managers (thanks @herrold)
+* Allow setting low values for console size (correctly applies console.lines=x in preferences.txt)
+* Make Preference window fit 600px height displays
+* Fix error when renaming an unsaved, newly added file. Thanks @matthijskooijman
+* Added the ability to increase/decrease font size via keyboard + mouse shortcuts (Ctrl + MouseWheel)
 
 [libraries]
 * Fixed wrong folder name for "Adafruit Circuit Playground" library, now it can be updated cleanly.