Merge branch 'master' into refactor-hints

exercises/move_semantics/move_semantics1.rs

@@ -1,6 +1,8 @@
 // move_semantics1.rs
 // Make me compile! Execute `rustlings hint move_semantics1` for hints :)
 
+// I AM NOT DONE
+
 fn main() {
     let vec0 = Vec::new();
 

exercises/move_semantics/move_semantics2.rs

@@ -2,6 +2,8 @@
 // Make me compile without changing line 10!
 // Execute `rustlings hint move_semantics2` for hints :)
 
+// I AM NOT DONE
+
 fn main() {
     let vec0 = Vec::new();
 

exercises/move_semantics/move_semantics3.rs

@@ -3,6 +3,8 @@
 // (no lines with multiple semicolons necessary!)
 // Execute `rustlings hint move_semantics3` for hints :)
 
+// I AM NOT DONE
+
 fn main() {
     let vec0 = Vec::new();
 

exercises/move_semantics/move_semantics4.rs

@@ -4,6 +4,8 @@
 // freshly created vector from fill_vec to its caller.
 // Execute `rustlings hint move_semantics4` for hints!
 
+// I AM NOT DONE
+
 fn main() {
     let vec0 = Vec::new();