* Added advanceBlock to time, moved tests around.

* Removed the standalone advanceBlock.

* Removed the 'id' field

* Fixed linter error.

* Removed the 'latest' test, since it only works if time hasn't been fast-forwarded.

* Removed .only directive.

* transferFrom now emits an Approval event, indicating the updated allowance.

* Updated burnFrom to also emit Approval.

* Added notices about the extra Approval events.

* Added time tests.

* Minor improvements.

* Added inTransaction tests.

* Added expectEvent.inConstructor.

* Changed inTransaction, removed decodeLogs.

* Flipped comparison to improve the error message.

* Improved expectEvent tests.

* Migrated tests to use expectEvent.

* Added roles constructor tests.

* Fixed linter errors.

* Made lodash a dev dependency.

* Added more inLogs tests.

* Update expectEvent.test.js

* Removed lodash.

* Moved role constructor tests to public role behavior.

* Revert "Flipped comparison to improve the error message."

This reverts commit 438c57833d997d2972a7730180a266bc3c6a87c5.

* Replaced chai-as-promised with shouldFail.

* Added ether tests.

* Added shouldFail base function and tests.

* Updated test descriptions.

* Reduced gas limit on out-of-gas tests.

* Rolled back Travis stages

* Rolled back the rolled-back changes.

* Renamed jobs, coverage can no longer fail.

* Cleaned up the yaml file a bit.

* Updated coveralls badge.

* Added balanceDifference tests.

* Added balanceDifference tests.

* Now using balanceDifference in all (most) tests.

* Fixed typo.

* Updated code style to 4 spaces and 120 max characters per line.

* Update contracts/token/ERC721/ERC721Pausable.sol

Co-Authored-By: nventuro <nicolas.venturo@gmail.com>

* Update contracts/token/ERC721/IERC721.sol

Co-Authored-By: nventuro <nicolas.venturo@gmail.com>

Small change in test description, should be "allows to approve..." instead of "allow to transfer..." in approve section, where test actualy try to approve, not to transfer.

* Remove redundant require statements

Now that SafeMath uses require, the require statements are redundant. They were also previously inconsistent because they were only included in some functions, but not others

* Update ERC20.sol

* add improvement in simpletoken example #1458

* fix not calling decimals get function in initial supply

* signing prefix added

* Minor improvement

* Tests changed

* Successfully tested

* Minor improvements

* Minor improvements

* Revert "Dangling commas are now required. (#1359)"

This reverts commit a6889776.

* updates

* fixes #1404

* approve failing test

* suggested changes done

* ISafeERC20 removed

* conflict fixes

* fixes #1386

* Update SafeMath.test.js

* signing prefix added

* Minor improvement

* Tests changed

* Successfully tested

* Minor improvements

* Minor improvements

* Revert "Dangling commas are now required. (#1359)"

This reverts commit a6889776.

* updates

* fixes #1404

* approve failing test

* suggested changes done

* ISafeERC20 removed

* conflict fixes

* fixes #1456

* fix Add a comment to ERC721Enumerable #1465

* fix Add comments to ERC721Burnable #1464

* Made _clearApproval private, added clarifying comments in _addTokenTo and _removeTokenFrom.

* Added approval information.

(cherry picked from commit 8204f6a7)

This attack was reported in https://github.com/OpenZeppelin/openzeppelin-solidity/issues/877

(cherry picked from commit 80458ebc)

(cherry picked from commit 6d415c50)

(cherry picked from commit a936cbf5)

(cherry picked from commit 1ac1ac98)

* Deleted unnecessary import.

* Added back SafeMath.

* Removed another unnecessary import.

(cherry picked from commit bbe804a1)

Now setting the finalized flag before doing finalization to prevent possbile reentrancy issues. (#1447)


(cherry picked from commit 5bb86521)

* Added a small Crowdsale fallback gas warning.

* Fixed a couple typos.

(cherry picked from commit 94692acb)

(cherry picked from commit 384dff9a)

(cherry picked from commit 5bf39078)

(cherry picked from commit c8220aee)

(cherry picked from commit 9155bfe2)

(cherry picked from commit 1c5f16ae)