Vendor dependencies for 0.3.0 release

vendor/rangemap/examples/roster.rs

@@ -0,0 +1,31 @@
+use chrono::offset::TimeZone;
+use chrono::{Duration, Utc};
+use rangemap::RangeMap;
+
+fn main() {
+    let people = ["Alice", "Bob", "Carol"];
+    let mut roster = RangeMap::new();
+
+    // Set up initial roster.
+    let start_of_roster = Utc.with_ymd_and_hms(2019, 1, 7, 0, 0, 0).unwrap();
+    let mut week_start = start_of_roster;
+    for _ in 0..3 {
+        for person in &people {
+            let next_week = week_start + Duration::weeks(1);
+            roster.insert(week_start..next_week, person);
+            week_start = next_week;
+        }
+    }
+
+    // Bob is covering Alice's second shift (the fourth shift overall).
+    let fourth_shift_start = start_of_roster + Duration::weeks(3);
+    let fourth_shift_end = fourth_shift_start + Duration::weeks(1);
+    roster.insert(fourth_shift_start..fourth_shift_end, &"Bob");
+
+    // Print out the roster, and observe that
+    // the fourth and fifth shifts have been coalesced
+    // into one range.
+    for (range, person) in roster.iter() {
+        println!("{} ({}): {}", range.start, range.end - range.start, person);
+    }
+}