v1.3.3: Berlin EIP 2537 tests

Updated tests submodule to
66a55cd42f
(2020-07-13) develop branch state of the ethereum/tests library.

This is an intermediary release including first EIP-2537 (Precompile for BLS12-381 curve operations)
tests, see ethereum/tests PR #713.

v1.3.2 - Intermediary Berlin Release (84b071c)

Updated tests submodule to 84b071c (2020-06-11) develop branch state of the ethereum/tests library.

This is an intermediary release included first EIP-2315 (EVM Subroutines) tests, see ethereum/tests PR #692 for a test case description.

v1.3.1 - Pre-Berlin HF / Submodule 9687870

Updated tests submodule to
9687870
(2020-04-27) develop branch state of the ethereum/tests library.

This is a pre-Berlin HF state (HF targeted for June/July 2020). Release is an intermediary
release for testing purposes to adopt to eventual test setup changes in ethereum/tests
on the usage side (ethereumjs-vm).

Behavioral changes can be tracked along Issue
#44 on this repo.

v1.3.0 - Submodule v7.0.0-beta.1 (Istanbul Support)

Updated tests submodule to v7.0.0-beta.1 ethereum/tests release. This is the first release on
ethereum/tests with substantial Istanbul support.

Note that the release is coming with substantial format/location changes on the
tests repo (see "Test Format Changes" section within the release notes), e.g.
a new LegacyTests folder for tests on older HFs and a new subfolder structure
for the BlockchainTests. These changes will likely require some adoption on
integration.

v1.2.8 - Maintenance Release

• Remove asyncawait dependency (browser compatibility), PR #38
• Dropped Node 6 support, added Node 10 support, PR #38
• Clean up of the getTests() function, PR #38

v1.2.7 - Temporary constantinopleFix Release (5cef36e)

Updated tests submodule to 5cef36e (Jan 24, 2019) ethereum/tests commit
which merges the PR #582
with the test updates on the Constantinople pre-/post reentrancy fixes.

This is just a temporary release to get some basis for further development
and should be replaced with a tag-release based release once a new
tag-release becomes available on the ethereum/tests repo.

v1.2.6 - Submodule v6.0.0-beta.3

Updated tests submodule to v6.0.0-beta.3 ethereum/tests release.

v1.2.5 - Submodule v6.0.0-beta.2

Updated tests submodule to v6.0.0-beta.2 ethereum/tests release.

Note:

Tests on ethereum/tests are now released as versioned tagged releases. The tests submodule will from this release onwards directly reference the
latest tag on ethereum/tests + link to the respective release notes.

v1.2.4 - Submodule 95a3092

Updated tests submodule to 95a3092.

Test changes summary:

• Fixed wrong difficulty tests (blockchain tests) on NoProof setting
• Refilled wallet tests (BlockchainTests/bcWalletTest/)
• Removed legacy tests under BlockchainTests/GeneralStateTests/stArgsZeroOneBalance/
• Fixed BLOCKHASH costs in Constantinople blockchain test versions

v1.2.3 - Submodule 9777827

Updated tests submodule to 9777827.

Test changes summary:

• New difficultyConstantinople.json difficulty tests
• Regenerated all state tests, mainly for SSTORE gas cost changes
• Fixed wrong timestamp in tests
• Refilled stCreate2 with new gas prices
• Refilled state tests as blockchain tests
• Refill of VM tests
• Corrected Constantinople expect section in state tests