Remove travis; update dependency

README.md

@@ -1,7 +1,6 @@
-[![Build Status](https://api.travis-ci.com/ancientlore/go-avltree.svg?branch=v2)](https://app.travis-ci.com/ancientlore/go-avltree)
-[![Coverage Status](https://coveralls.io/repos/ancientlore/go-avltree/badge.svg?branch=v2)](https://coveralls.io/github/ancientlore/go-avltree?branch=v2)
-[![pkg.go.dev](https://pkg.go.dev/github.com/ancientlore/go-avltree/v2?status.png)](https://pkg.go.dev/github.com/ancientlore/go-avltree/v2)
-[gocover](http://gocover.io/github.com/ancientlore/go-avltree/v2)
+# go-avltree
+
+[![Go Reference](https://pkg.go.dev/badge/github.com/ancientlore/go-avltree/v2.svg)](https://pkg.go.dev/github.com/ancientlore/go-avltree/v2)
 
 An [AVL tree](http://en.wikipedia.org/wiki/AVL_tree) (Adel'son-Vel'skii & Landis) is a binary search tree in which the heights of the left and right subtrees of the root differ by at most one and in which the left and right subtrees are again AVL trees.
 

go.mod

@@ -1,5 +1,5 @@
 module github.com/ancientlore/go-avltree/v2
 
-go 1.18
+go 1.19
 
-require golang.org/x/exp v0.0.0-20221004215720-b9f4876ce741
+require golang.org/x/exp v0.0.0-20230203172020-98cc5a0785f9

go.sum

@@ -1,2 +1,2 @@
-golang.org/x/exp v0.0.0-20221004215720-b9f4876ce741 h1:fGZugkZk2UgYBxtpKmvub51Yno1LJDeEsRp2xGD+0gY=
-golang.org/x/exp v0.0.0-20221004215720-b9f4876ce741/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
+golang.org/x/exp v0.0.0-20230203172020-98cc5a0785f9 h1:frX3nT9RkKybPnjyI+yvZh6ZucTZatCCEm9D47sZ2zo=
+golang.org/x/exp v0.0.0-20230203172020-98cc5a0785f9/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=