Transaction/Script: bitcoin network no longer implied

A Transaction (and its subsequent scripts) do not carry any network
specific information in the Bitcoin protocol.
Therefore they can not (without further context) produce the network
specific constants for the generation of the base58 Addresses.

As TransactionOut.address is used heavily throughout Wallet and other
areas of the library, this could not be entirely removed without a large
number of changes.
For now, TransactionOut.address is only defined in the case of
Tx.addOutput being used directly:

      Transaction.addOutput(address, value)

src/script.js

@@ -1,8 +1,6 @@
-var assert = require('assert')
 var Address = require('./address')
+var assert = require('assert')
 var crypto = require('./crypto')
-var convert = require('./convert')
-var networks = require('./networks')
 var Opcode = require('./opcode')
 
 function Script(data) {
@@ -202,18 +200,6 @@ Script.prototype.toScriptHash = function() {
   return crypto.hash160(this.buffer)
 }
 
-Script.prototype.getToAddress = function(network) {
-  network = network || networks.bitcoin
-
-  return Address.fromScriptPubKey(this, network)
-}
-
-Script.prototype.getFromAddress = function(version) {
-  version = version || networks.bitcoin.pubKeyHash
-
-  return new Address(this.simpleInHash(), version)
-}
-
 /**
  * Compare the script to known templates of scriptSig.
  *
@@ -259,58 +245,6 @@ Script.prototype.getInType = function() {
   }
 }
 
-/**
- * Returns the affected public key for this input.
- *
- * This currently only works with payToPubKeyHash transactions. It will also
- * work in the future for standard payToScriptHash transactions that use a
- * single public key.
- *
- * However for multi-key and other complex transactions, this will only return
- * one of the keys or raise an error. Therefore, it is recommended for indexing
- * purposes to use Script#simpleInHash or Script#simpleOutHash instead.
- *
- * @deprecated
- */
-Script.prototype.simpleInPubKey = function() {
-  switch (this.getInType()) {
-    case 'pubkeyhash':
-      return this.chunks[1]
-    case 'pubkey':
-      // TODO: Theoretically, we could recover the pubkey from the sig here.
-      //       See https://bitcointalk.org/?topic=6430.0
-      throw new Error('Script does not contain pubkey')
-    default:
-      throw new Error('Encountered non-standard scriptSig')
-  }
-}
-
-/**
- * Returns the affected address hash for this input.
- *
- * For standard transactions, this will return the hash of the pubKey that
- * can spend this output.
- *
- * In the future, for standard payToScriptHash inputs, this will return the
- * scriptHash.
- *
- * Note: This function provided for convenience. If you have the corresponding
- * scriptPubKey available, you are urged to use Script#simpleOutHash instead
- * as it is more reliable for non-standard payToScriptHash transactions.
- *
- * This method is useful for indexing transactions.
- */
-Script.prototype.simpleInHash = function() {
-  return crypto.hash160(this.simpleInPubKey())
-}
-
-/**
- * Old name for Script#simpleInHash.
- *
- * @deprecated
- */
-Script.prototype.simpleInPubKeyHash = Script.prototype.simpleInHash
-
 /**
  * Add an op code to the script.
  */
@@ -347,22 +281,6 @@ Script.prototype.writeBytes = function(data) {
   this.chunks.push(data)
 }
 
-/**
- * Create an output for an address
- */
-Script.createScriptPubKey = function(address, network) {
-  assert(address instanceof Address)
-  network = network || networks.bitcoin
-
-  if (address.version === network.pubKeyHash) {
-    return Script.createPubKeyHashScriptPubKey(address.hash)
-  }
-
-  assert.strictEqual(address.version, network.scriptHash, 'Unknown address type')
-
-  return Script.createP2SHScriptPubKey(address.hash)
-}
-
 // OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG
 Script.createPubKeyHashScriptPubKey = function(hash) {
   var script = new Script()