Dynamic sized strips, tables, and date picker (#963)

egui_demo_lib/Cargo.toml

@@ -20,15 +20,21 @@ all-features = true
 
 
 [features]
-default = ["chrono"]
+default = ["datetime"]
 
 # Enable additional checks if debug assertions are enabled (debug builds).
 extra_debug_asserts = ["egui/extra_debug_asserts"]
 # Always enable additional checks.
 extra_asserts = ["egui/extra_asserts"]
 
+datetime = ["egui_extras/chrono", "chrono"]
 http = ["egui_extras", "ehttp", "image", "poll-promise"]
-persistence = ["egui/persistence", "epi/persistence", "serde"]
+persistence = [
+  "egui/persistence",
+  "epi/persistence",
+  "egui_extras/persistence",
+  "serde",
+]
 serialize = ["egui/serialize", "serde"]
 syntax_highlighting = ["syntect"]
 
@@ -45,6 +51,7 @@ unicode_names2 = { version = "0.5.0", default-features = false }
 # feature "http":
 egui_extras = { version = "0.17.0", path = "../egui_extras", optional = true, features = [
   "image",
+  "datepicker",
 ] }
 ehttp = { version = "0.2.0", optional = true }
 image = { version = "0.24", optional = true, default-features = false, features = [
@@ -64,7 +71,6 @@ serde = { version = "1", optional = true, features = ["derive"] }
 [dev-dependencies]
 criterion = { version = "0.3", default-features = false }
 
-
 [[bench]]
 name = "benchmark"
 harness = false