When a user is not found, indicates its email in error messages.

Bumped version to 1.4.1

src/users/users.go

@@ -58,7 +58,7 @@ func (users *Users)GetUserByEmail(email string) (User, error) {
 		}
 	}
 
-	return dummyUser, errors.New("User not found")
+	return dummyUser, errors.New(email+": user not found")
 }
 
 // Deletes a user by its email and upates the user file.
@@ -74,7 +74,7 @@ func (users *Users)DeleteUserByEmail(email string) error {
 		err := users.writeUsersFile()
 		return err
 	}
-	return errors.New("User not found")
+	return errors.New(email+": user not found")
 }
 
 // Adds a user and updates the users file.
@@ -110,7 +110,7 @@ func (users *Users)UpdateUser(user *User) error {
 		err := users.writeUsersFile()
 		return err
 	}
-	return errors.New("User not found")
+	return errors.New(key+": user not found")
 }
 
 // Creates users by reading them from the user file.

src/version/version.go

@@ -7,7 +7,7 @@ import (
 const (
 	major  = 1
 	minor  = 4
-	bugfix = 0
+	bugfix = 1
 )
 
 type Version struct {