Pull out safemath library

Author: jotaen

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/alecthomas/kong v1.8.0
 	github.com/jotaen/genie v0.0.1
 	github.com/jotaen/kong-completion v0.0.6
+	github.com/jotaen/safemath v0.0.1
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/posener/complete v1.2.3
 	github.com/stretchr/testify v1.10.0

go.sum

@@ -2,8 +2,6 @@ cloud.google.com/go v0.118.2 h1:bKXO7RXMFDkniAAvvuMrAPtQ/VHrs9e7J5UT3yrGdTY=
 cloud.google.com/go v0.118.2/go.mod h1:CFO4UPEPi8oV21xoezZCrd3d81K4fFkDTEJu4R8K+9M=
 github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
 github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
-github.com/alecthomas/kong v1.7.0 h1:MnT8+5JxFDCvISeI6vgd/mFbAJwueJ/pqQNzZMsiqZE=
-github.com/alecthomas/kong v1.7.0/go.mod h1:p2vqieVMeTAnaC83txKtXe8FLke2X07aruPWXyMPQrU=
 github.com/alecthomas/kong v1.8.0 h1:LEDIdSYrHU+4oTF2BL0NAfw++wH6lg/LzAJodTkLikM=
 github.com/alecthomas/kong v1.8.0/go.mod h1:p2vqieVMeTAnaC83txKtXe8FLke2X07aruPWXyMPQrU=
 github.com/alecthomas/repr v0.4.0 h1:GhI2A8MACjfegCPVq9f1FLvIBS+DrQ2KQBFZP1iFzXc=
@@ -25,6 +23,8 @@ github.com/jotaen/genie v0.0.1 h1:gURxhYIpVEJ7SKjjNRDLV5OrgMxCbkAdWhjD86ad9P8=
 github.com/jotaen/genie v0.0.1/go.mod h1:bu+PbJDEJ9915yp4xml7OXoM4iBsSDfgtGVwv5Ag0Gg=
 github.com/jotaen/kong-completion v0.0.6 h1:VP1KGvXPeB7MytYR+zZQoWw1gf/HIV1/EvWC38BHZN4=
 github.com/jotaen/kong-completion v0.0.6/go.mod h1:fuWw9snL6joY5mXbI0Dd5FWEZODaWXAeqaRxo6dAvLk=
+github.com/jotaen/safemath v0.0.1 h1:YcUhSIUtwQY1rUUT3AeP+alzTHUAsM4Pap8ZMn3GOlc=
+github.com/jotaen/safemath v0.0.1/go.mod h1:KlKBnI3qvGcr3+iuvp3vABBZNFRjRcwRUVQa/jM38xQ=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=

klog/duration.go

@@ -3,9 +3,10 @@ package klog
 import (
 	"errors"
 	"fmt"
-	"github.com/jotaen/klog/klog/service/safemath"
 	"regexp"
 	"strconv"
+
+	"github.com/jotaen/safemath/safemath"
 )
 
 // Duration represents a time span.