If iso has no parameter transfer, it needs to be released

[qingshang]

v8go/context.go

Line 57 in da7f43c

 opts.iso = NewIsolate() 

In all cases, it is not released
ctx := v8go.NewContext(nil)
ctx.Close()
ctx.Isolate().Dispose()

[qingshang]

It can cause memory leaks

[Dylan Thacker-Smith]

I think that is expected. Although, the documentation could be updated to make this clearer.