Mail · Sorting: a label picker and a snooze menu

LabelPicker puts labels on a message: a field finds them by name,
arrows move and a press or Enter turns one on or off, each row with its
check and its hue. A name no label has can be made into one, and the
field starts over. Its rows are the option rows every list shares;
forms::marked_row leads one with a mark. The cursor shows only while
the field has focus.

SnoozePicker offers later today, tomorrow, this weekend and next week,
each with its day and hour, or a time picked in a dialog. It shares
mail::times with ScheduleSend: the names, the dialog, which now waits
for a time ahead of now, and a rule that a moment comes once, so on a
Sunday tomorrow morning no longer repeats as Monday morning.

src/forms/mod.rs

@@ -85,8 +85,8 @@ pub use multi::MultiSelect;
 pub use number::{NumberInput, ScrubInput};
 pub use options::Choice;
 pub(crate) use options::{
-    OnFlag, OnNumber, OnValue, OnValues, Pick, Run, float, float_height, reveal, revealer, step,
-    surface,
+    OnFlag, OnNumber, OnValue, OnValues, Pick, Run, float, float_height, marked_row, reveal,
+    revealer, step, surface,
 };
 pub use pairs::{FieldArray, KeyValueInput, ListInput};
 pub use path::PathInput;