diff --git a/.gitignore b/.gitignore
index b83d222..c9acaee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,5 @@
 /target/
+*.log
+*.json
+*.yaml
+*.yml
diff --git a/TODOs.org b/TODOs.org
index 663c7d0..722ad3d 100644
--- a/TODOs.org
+++ b/TODOs.org
@@ -1,24 +1,43 @@
 #+title: LangEvolveRs TODOs
 
-* TODO Write core features [1/3]
+* TODO Write core features [4/6]
   Write core features found in [[https://github.com/ceronyon/LangEvolve/][original project]].
 
 ** DONE Words loading
    CLOSED: [2020-03-26 jeu. 17:46]
 
-** TODO Settings loading [0/2]
+** DONE Settings loading [2/2]
+   CLOSED: [2020-03-28 sam. 15:07]
 
-*** TODO Categories loading
+*** DONE Categories loading
+    CLOSED: [2020-03-28 sam. 15:07]
 
-*** TODO Rules loading
+*** DONE Rules loading
+    CLOSED: [2020-03-28 sam. 15:07]
+
+** DONE Settings export
+   CLOSED: [2020-03-28 sam. 15:08]
+
+** DONE Format support [2/2]
+   CLOSED: [2020-03-28 sam. 15:08]
+
+*** DONE JSON
+    CLOSED: [2020-03-28 sam. 15:08]
+
+*** DONE Yaml
+    CLOSED: [2020-03-28 sam. 15:08]
 
 ** TODO Rules apply
 
+** TODO Warn in case of ruleset version mismatch [0/1]
+
+*** TODO Reject ruleset if current version is lower than imported version
+
 * TODO Write CLI interface
   Write cli interface for core project
 
 * TODO Write GUI interface [0/1]
-** TODO Choose GUI framework [0/7]
+** TODO Choose GUI framework [1/7]
    Best framework  seems to  be [[https://github.com/hecrj/iced][iced]]. See  if it is  compatible with  Windows and
    macOS. Same with [[https://crates.io/crates/Conrod][Conrod]]. [[https://crates.io/crates/druid][Druid]] supports both macOS and Windows, check if it
    supports GNU+Linux.
@@ -27,10 +46,14 @@
    - macOS :: [[https://crates.io/crates/core-foundation][core-foundation]] bindings
    - Windows :: [[https://crates.io/crates/imgui-rs][imgui]]?
 
-*** TODO Check compatibility for [[https://github.com/hecrj/iced][iced]] [0/3]
-    - [ ] GNU+Linux
-    - [ ] Windows
-    - [ ] macOS
+   After verifying, it seems iced is  compatible with all three major platforms.
+   I think I will use it for GUI support.
+
+*** DONE Check compatibility for [[https://github.com/hecrj/iced][iced]] [3/3]
+    CLOSED: [2020-03-28 sam. 15:09]
+    - [X] GNU+Linux
+    - [X] Windows
+    - [X] macOS
 
 *** TODO Check compatibility for [[https://crates.io/crates/Conrod][Conrod]] [0/3]
     - [ ] GNU+Linux