rename non-camel-case vars, refactor, satisfy linter

seat.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 )
 
-// Information about a seat containing input devices
+// Seat stores information about a seat containing input devices
 type Seat struct {
 	Name         string   `json:"name"`
 	Capabilities int      `json:"capabilities"`
@@ -13,9 +13,9 @@ type Seat struct {
 	Devices      []*Input `json:"devices"`
 }
 
-// Get input seats
+// GetSeats returns input seats
 func (ipc *SwayIPC) GetSeats() ([]*Seat, error) {
-	payload, err := ipc.get(GET_SEATS)
+	payload, err := ipc.get(MsgGetSeats)
 	if err != nil {
 		return nil, err
 	}