Revert "delete everything" (includes everything non-go-crypto)

This reverts commit 96a3502

version/version.go

@@ -0,0 +1,23 @@
+package version
+
+// Version components
+const (
+	Maj = "0"
+	Min = "20"
+	Fix = "1"
+)
+
+var (
+	// Version is the current version of Tendermint
+	// Must be a string because scripts like dist.sh read this file.
+	Version = "0.20.1-dev"
+
+	// GitCommit is the current HEAD set using ldflags.
+	GitCommit string
+)
+
+func init() {
+	if GitCommit != "" {
+		Version += "-" + GitCommit
+	}
+}