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

* Added a small Crowdsale fallback gas warning.

* Fixed a couple typos.

* Made some internal crowdsale methods internal.

* Made all Crowdsale constructors internal.

* 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

* allowance methods in library

* Improved SafeERC20 tests.

* Fixed test coverage.

* Improved TokenVesting events.

* Added extra checks to TokenVesting.

* Renamed the events.

* Fixed linter error.

* Fixed a test that failed to cover a require.

* Renamed TokensRevoked to TokenVestingRevoked.

* Renamed file, added events and set _addPayee to private

* unwanted file

* adjusted test

* adjusted test

* PaymentReceived event added

* Added event testing.

* Fix static tests

* Added address of pauser/unpauser in events

* Added the account to the Pausable tests.

* Update contracts/ownership/Secondary.sol

* Update Secondary.sol

* Update Secondary.test.js

* Update Secondary.test.js

* Update Secondary.sol

* Made some inherit-only contracts internal.

* Added OwnableMock.

* Made some TokenVesting public functions private.

* Fixed linter error.

* Moved Escrows into an escrow subdirectory, improved docs.

* Fixed escrow mock.

* Fixed some more imports.

* added function to renounce ownership

* Make state variables private (#1411)

* fixes #1414

* use prefix underscore for internal state variables

* make _supportedInterfaces private

* Removed unused advanceToBlock.

* Added advanceBlock tests.

* Fixed advanceToBlock tests.

* Added single argument tests.

* Finished inLogs tests.

* Fixed linter errors.

* Fixed linter errors.

* 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 #1391

* Replaced assertJump, assertRevert and expectThrow with shouldFail.

* Fixed linter errors.

* Fixed typo.

* Made the helpers async.

* 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 #1206

* 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 #1392

* event tests added

* constructor event added

*     Add Arrays library with unit tests (#1209)

    * prepared due to snapshot token requirements
    * add library with method to find upper bound
    * add unit test for basic and edge cases

* Imporove documentation for Arrays library

Simplify Arrays.test.js to use short arrays as test date

* Added comment for uint256 mid variable.
* Explaned why uint256 mid variable calculated as Math.average is safe to use as index of array.

* 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 #1384

* introduced claimable and cancelBounty

* cancelBounty tests

* Update BreakInvariantBounty.test.js