Add garbage collection feature

* Add `todo gc`, which will delete all archived todos.
* `NextId` will now take the first available id, rather than just the MaxId + 1.

1 files changed, 6 insertions, 0 deletions

diff --git a/todo.go b/todo.go
index 2a45f28..b42eed6 100644
--- a/todo.go
+++ b/todo.go
@@ -106,6 +106,10 @@ func usage() {
 	fmt.Println("\tDeletes a todo with id 33\n")
 	fmt.Println("Todolist was lovingly crafted by Grant Ammons (https://twitter.com/gammons).")
 	fmt.Println("For full documentation, please visit http://todolist.site")
+
+	blueBold.Println("\nGarbage Collection")
+	yellow.Println("\ttodo gc")
+	fmt.Println("\tDeletes all archived todos.\n")
 }
 
 func routeInput(command string, input string) {
@@ -131,6 +135,8 @@ func routeInput(command string, input string) {
 		app.EditTodoDue(input)
 	case "ex", "expand":
 		app.ExpandTodo(input)
+	case "gc":
+		app.GarbageCollect()
 	case "init":
 		app.InitializeRepo()
 	case "web":