update vendored gomacro to fix bug [gomacro#28](cosmos72/gomacro#28):

in 'import "path"' without an explicit name, use the name declared inside the package being imported, not paths.FileName(path)

Author: cosmos72

complete.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	interp "github.com/cosmos72/gomacro/fast"
+	"github.com/cosmos72/gomacro/base"
 )
 
 type Completion struct {
@@ -36,7 +37,7 @@ func handleCompleteRequest(ir *interp.Interp, receipt msgReceipt) error {
 		content["traceback"] = nil
 		content["status"] = "error"
 	} else {
-		partialWord := interp.TailIdentifier(prefix)
+		partialWord := base.TailIdentifier(prefix)
 		content["cursor_start"] = float64(len(prefix) - len(partialWord))
 		content["cursor_end"] = float64(cursorPos)
 		content["matches"] = matches