chore: upgrade to Go 1.20

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: ["1.18"]
+        go-version: ["1.20"]
 
     steps:
       - uses: actions/setup-go@v3
@@ -21,14 +21,17 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.47.3
+          version: v1.60.3
 
   test:
     name: test
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: ["1.18", "1.19"]
+        go-version: 
+          - "1.20"
+          - "1.21"
+          - "1.22"
 
     steps:
       - uses: actions/setup-go@v3

.golangci.yml

@@ -20,6 +20,9 @@ linters-settings:
     allow-assign-and-anything: true
     allow-cuddle-declarations: true
     allow-assign-and-call: true
+  main:
+    allow:
+      - "github.com/uber/h3-go/v4"
 
 linters:
   disable-all: true

README.md

@@ -124,7 +124,7 @@ func ExampleLatLngToCell() {
 | `originToDirectedEdges`      | `Cell#DirectedEdges`                               |
 | `directedEdgeToBoundary`     | `DirectedEdge#Boundary`                            |
 | `cellToVertex`               | `CellToVertex`                                     |
-| `cellToVertexes`             | `cellToVertexes`                                   |
+| `cellToVertexes`             | `CellToVertexes`                                   |
 | `vertexToLatLng`             | `VertexToLatLng`                                   |
 | `isValidVertex`              | `IsValidVertex`                                    |
 | `gridDistance`               | `GridDistance`, `Cell#GridDistance`                |

go.mod

@@ -1,3 +1,3 @@
 module github.com/uber/h3-go/v4
 
-go 1.18
+go 1.20

h3_test.go

@@ -612,8 +612,10 @@ func TestPentagons(t *testing.T) {
 		res := res
 		t.Run(fmt.Sprintf("res=%d", res), func(t *testing.T) {
 			t.Parallel()
+
 			pentagons := Pentagons(res)
 			assertEqual(t, 12, len(pentagons))
+
 			for _, pentagon := range pentagons {
 				assertTrue(t, pentagon.IsPentagon())
 				assertEqual(t, res, pentagon.Resolution())
@@ -737,6 +739,7 @@ func assertEqual[T comparable](t *testing.T, expected, actual T, msgAndArgs ...i
 			expStr = fmt.Sprintf("%v", e)
 			actStr = fmt.Sprintf("%v", a)
 		}
+
 		t.Errorf("%v != %v", expStr, actStr)
 		logMsgAndArgs(t, msgAndArgs...)
 	}
@@ -779,6 +782,7 @@ func assertEqualLatLngs(t *testing.T, expected, actual []LatLng, msgAndArgs ...i
 
 			t.Errorf("LatLngs[%d]: (%s, %s)", i, latStr, lngStr)
 			logMsgAndArgs(t, msgAndArgs...)
+
 			count++
 
 			if count > 10 {
@@ -808,6 +812,7 @@ func assertEqualCells(t *testing.T, expected, actual []Cell, msgAndArgs ...inter
 		if c != actual[i] {
 			t.Errorf("Cells[%d]: %v != %v", i, c, actual[i])
 			logMsgAndArgs(t, msgAndArgs...)
+
 			count++
 
 			if count > 10 {
@@ -863,6 +868,7 @@ func assertEqualDisks(t *testing.T, expected, actual []Cell) {
 	for i, cell := range expected {
 		if cell != actual[i] {
 			t.Errorf("cell[%d]: %v != %v", i, cell, actual[i])
+
 			count++
 
 			if count > 5 {