remix-tests tests fixes

remix-tests/sol/tests.sol.js

 module.exports = `
-pragma solidity >=0.4.22 <0.6.0;
+pragma solidity >=0.4.22 <0.7.0;
 
 library Assert {
 

remix-tests/tests/examples_1/simple_storage.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 contract SimpleStorage {
   uint public storedData;
 

remix-tests/tests/examples_1/simple_storage_test.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 import "./simple_storage.sol";
 
 contract MyTest {

remix-tests/tests/examples_2/simple_storage.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 contract SimpleStorage {
   uint public storedData;
 

remix-tests/tests/examples_2/simple_storage_test.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 import "./simple_storage.sol";
 
 contract MyTest {

remix-tests/tests/examples_3/simple_string.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 contract SimpleString {
   string public storedData;
 

remix-tests/tests/examples_3/simple_string_test.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 import "./simple_string.sol";
 
 contract StringTest {

remix-tests/tests/examples_4/SafeMath.sol

 // Copyright (c) 2016 Smart Contract Solutions, Inc.
 
-pragma solidity >=0.4.22 <0.6.0;
+pragma solidity >=0.4.22 <0.7.0;
 
 
 /**

remix-tests/tests/examples_4/SafeMathProxy.sol

-pragma solidity >=0.4.22 <0.6.0;
+pragma solidity >=0.4.22 <0.7.0;
 import "./SafeMath.sol";
 
 /*

remix-tests/tests/examples_4/SafeMath_test.sol

-pragma solidity >=0.4.22 <0.6.0;
+pragma solidity >=0.4.22 <0.7.0;
 import "remix_tests.sol";
 import "./SafeMath.sol";
 import "./SafeMathProxy.sol";

remix-tests/tests/examples_5/contract/simple_storage.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 
 import "../../examples_4/SafeMath.sol";
 import "../lib/EvenOdd.sol";

remix-tests/tests/examples_5/lib/EvenOdd.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 
 contract EvenOdd {
     

remix-tests/tests/examples_5/test/simple_storage_test.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 import "./../contract/simple_storage.sol";
 
 contract StorageResolveTest {

remix-tests/tests/number/number_test.sol

-pragma solidity ^0.5.0;
+pragma solidity >= 0.5.0 < 0.7.0;
 
 contract IntegerTest {