1. Redefine the price of all `OpCode`s.
2. Redefine the price of all `SYSCALL`s.
3. Define the price of `NativeContract`s.
4. Storage is charged in bytes.
5. Modify the price of contract deployment. (100 for deployment, and 10 for migration)
6. Remove the 10 free gas for each invocation.
7. Limit the gas for transactions' verification to 0.1 gas.

* Json api

* Serialize and Deserialize

* Number overflow protection

* Erik's review

* Clean code

* Fix max js integer

* Prevent non deterministic code

* Throw with decimal values

* improve

* rename

* rename

* simplify

* simplify

* Add `MIN_SAFE_INTEGER`

* Json changes

* readability

* Implement JSON according to RFC 7159

* Fix the parser of `object` and `array`

* disallow to contain duplicate keys in an object

* Fix the parser of `number`

* Fix the parser of `string`

* Fix `JString.Parse()`

* Fix `JObject.ParseObject()` and `JArray.Parse()`

* Some json unit test

* Fix `JObject.Parse()`

* Ensure that is not possible to parse invalid numbers

* Two more tests

* More unit test

* Add generic `OrderedDictionary`

* Use ordered dictionary for properties

* Fix Ordered dictionary

* internal

* Null in uppercase

* Indentantions

* Follow some Visual studio hints

* Clean code