fix crash when saving config before user dir exists

README.md

@@ -9,12 +9,17 @@ logic mostly like https://git.crispypin.cc/CrispyPin/marble
 - engine tests
 - blag post about marble movement logic?
 ### bugs
-
+- input tiles still consume input when their marble creation is blocked
+- Shift+A and A+Shift conflict
+- rigt side grid rendering broken
 ### features
 #### 0.3.x
 - more levels
   - packet routing?
   - game of life sim (width;height;steps;grid -> grid)
+- show level name in end popup
+- hide timing debug info by default
+- shrink button
 #### 0.4.0
 - UI layout engine
   - global scale setting
@@ -26,6 +31,7 @@ logic mostly like https://git.crispypin.cc/CrispyPin/marble
 - button + binding to flip selection that is being pasted
 - accessibility
   - background colour setting (requires color picker => after UI rework)
+  - light theme for UI
   - hotkeys for everything (no mouse needed to play)
     - menu navigation (requires UI rework)
     - speed up/down
@@ -42,7 +48,7 @@ logic mostly like https://git.crispypin.cc/CrispyPin/marble
 - show histograms
 - author name in solutions and blueprints
 ### undecided
-- option to skip (speed through with settable multiplier) first N stages, for when you are debugging something that happens in later stages
+- option to skip (speed through with settable multiplier) first N stages or cycles, for when you are debugging something that happens in later stages
 - hide some tile tools in early levels to make it less overwhelming
 - footprint score (tiles that were non-empty at any point in the run)
 - option to use 8-bit marbles?