bug fixes (TCP + uint256) and started core part (#14)

* Fixed TCP read + Uint256 reversed array + started on some core pieces

* Disabled some debug output + muted test

* 0.5.0

pkg/network/peer.go

@@ -14,6 +14,8 @@ type Peer interface {
 	callGetaddr(*Message) error
 	callVerack(*Message) error
 	callGetdata(*Message) error
+	callGetblocks(*Message) error
+	callGetheaders(*Message) error
 }
 
 // LocalPeer is the simplest kind of peer, mapped to a server in the
@@ -42,6 +44,14 @@ func (p *LocalPeer) callGetaddr(msg *Message) error {
 	return p.s.handleGetaddrCmd(msg, p)
 }
 
+func (p *LocalPeer) callGetblocks(msg *Message) error {
+	return nil
+}
+
+func (p *LocalPeer) callGetheaders(msg *Message) error {
+	return nil
+}
+
 func (p *LocalPeer) callGetdata(msg *Message) error {
 	return nil
 }