Feature: scheduled date

- Supports 'scheduled' date for tasks, which represent the earliest opportunity
  to work on a task.
- Added unit tests for urgency.
- Implemented color rule.
- Added scheduled to 'info' report.
- Updated assorted documentation.
- Removed comments in default rc because they are never seen.
- Added (broken) 'ready' report, which is like 'next' but only for ready tasks.

src/commands/CmdEdit.cpp

@@ -159,6 +159,7 @@ std::string CmdEdit::formatTask (Task task)
          << "  Created:           " << formatDate (task, "entry")                       << "\n"
          << "  Started:           " << formatDate (task, "start")                       << "\n"
          << "  Ended:             " << formatDate (task, "end")                         << "\n"
+         << "  Scheduled:         " << formatDate (task, "scheduled")                   << "\n"
          << "  Due:               " << formatDate (task, "due")                         << "\n"
          << "  Until:             " << formatDate (task, "until")                       << "\n"
          << "  Recur:             " << task.get ("recur")                               << "\n"
@@ -344,6 +345,37 @@ void CmdEdit::parseTask (Task& task, const std::string& after)
     }
   }
 
+  // scheduled
+  value = findValue (after, "\n  Scheduled:");
+  if (value != "")
+  {
+    if (task.get ("scheduled") != "")
+    {
+      Date original (task.get_date ("scheduled"));
+      std::string formatted = original.toString (context.config.get ("dateformat"));
+
+      if (formatted != value)
+      {
+        context.footnote (STRING_EDIT_SCHED_MOD);
+        task.set ("scheduled", value);
+      }
+    }
+    else
+    {
+      context.footnote (STRING_EDIT_SCHED_MOD);
+      task.set ("scheduled", value);
+    }
+  }
+  else
+  {
+    if (task.get ("scheduled") != "")
+    {
+      context.footnote (STRING_EDIT_SCHED_DEL);
+      task.setStatus (Task::pending);
+      task.remove ("scheduled");
+    }
+  }
+
   // due
   value = findValue (after, "\n  Due:");
   if (value != "")

src/commands/CmdInfo.cpp

@@ -244,6 +244,14 @@ int CmdInfo::execute (std::string& output)
       view.set (row, 1, Date (task->get_date ("wait")).toString (dateformat));
     }
 
+    // scheduled
+    if (task->has ("scheduled"))
+    {
+      row = view.addRow ();
+      view.set (row, 0, STRING_COLUMN_LABEL_SCHED);
+      view.set (row, 1, Date (task->get_date ("scheduled")).toString (dateformat));
+    }
+
     // start
     if (task->has ("start"))
     {

src/commands/CmdShow.cpp

@@ -112,6 +112,7 @@ int CmdShow::execute (std::string& output)
     " color.pri.M"
     " color.pri.none"
     " color.recurring"
+    " color.scheduled"
     " color.summary.background"
     " color.summary.bar"
     " color.sync.added"
@@ -185,6 +186,7 @@ int CmdShow::execute (std::string& output)
     " taskd.credentials"
     " undo.style"
     " urgency.active.coefficient"
+    " urgency.scheduled.coefficient"
     " urgency.annotations.coefficient"
     " urgency.blocked.coefficient"
     " urgency.blocking.coefficient"