diff --git a/Cargo.toml b/Cargo.toml
index 496042c..1817ac2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,11 +14,17 @@ harness = false
 approx = { version = "0.5.1", optional = true }
 
 [dev-dependencies]
-criterion = "0.4"
-plotters = { version = "0.3.4", default-features = false, features = ["svg_backend", "all_elements", "all_series"] }
-plotters-backend = "0.3.4"
-time = { version = "0.3.17", features = ["parsing"] }
+criterion = "0.5"
+plotters = { version = "0.3", default-features = false, features = ["svg_backend", "all_elements", "all_series"] }
+plotters-backend = "0.3"
+time = { version = "0.3", features = ["parsing"] }
 trueskill-tt = { path = ".", features = ["approx"] }
 
 [profile.release]
 debug = true
+
+[profile.bench]
+debug = true
+
+[profile.dev]
+debug = true
diff --git a/NOTEPAD.md b/NOTEPAD.md
new file mode 100644
index 0000000..0d45245
--- /dev/null
+++ b/NOTEPAD.md
@@ -0,0 +1,15 @@
+# History
+
+```shell
+teams: [[player]]
+weights: [[f64]]
+results: [f64]
+
+player: (gaussian, f64, f64)
+
+players: [player]
+weights: [f64]
+
+
+teams: [([(player, weight)], result)]
+```