(cherry picked from commit c8220aee)

(cherry picked from commit 9155bfe2)

(cherry picked from commit 1c5f16ae)

* Made some internal crowdsale methods internal.

* Made all Crowdsale constructors internal.

(cherry picked from commit d9fdffe8)

* 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.

(cherry picked from commit 315f426f)

* 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.

(cherry picked from commit 67dac7ae)

* Renamed file, added events and set _addPayee to private

* unwanted file

* adjusted test

* adjusted test

* PaymentReceived event added

* Added event testing.

* Fix static tests

(cherry picked from commit a0749979)

* Added address of pauser/unpauser in events

* Added the account to the Pausable tests.

(cherry picked from commit fcab9c89)

* Update contracts/ownership/Secondary.sol

* Update Secondary.sol

* Update Secondary.test.js

* Update Secondary.test.js

* Update Secondary.sol

(cherry picked from commit cbe41486)

(cherry picked from commit 0231fac5)

(cherry picked from commit ff0c048a)

* Made some inherit-only contracts internal.

* Added OwnableMock.

(cherry picked from commit 96d6103e)

* Made some TokenVesting public functions private.

* Fixed linter error.

(cherry picked from commit df3c1137)

* Moved Escrows into an escrow subdirectory, improved docs.

* Fixed escrow mock.

* Fixed some more imports.

(cherry picked from commit f3df2dab)

(cherry picked from commit cfef5836)

(cherry picked from commit d8ab8a00)

(cherry picked from commit 2733cb4a)

* added function to renounce ownership

* Make state variables private (#1411)

(cherry picked from commit 03765e08)

(cherry picked from commit a3e312d1)

(cherry picked from commit 3341dd88)

(cherry picked from commit 3bd30f73)

* fixes #1414

(cherry picked from commit 844a96d0)

* use prefix underscore for internal state variables

* make _supportedInterfaces private

(cherry picked from commit 03dfb296)

* Removed unused advanceToBlock.

* Added advanceBlock tests.

* Fixed advanceToBlock tests.

* Added single argument tests.

* Finished inLogs tests.

* Fixed linter errors.

* Fixed linter errors.

(cherry picked from commit 9f822906)

(cherry picked from commit eb92fd1f)

(cherry picked from commit 076cb7de)

* 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

(cherry picked from commit da67e435)

* Replaced assertJump, assertRevert and expectThrow with shouldFail.

* Fixed linter errors.

* Fixed typo.

* Made the helpers async.

(cherry picked from commit b0da0fde)

* 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

(cherry picked from commit af42c39e)

* 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 #1200

* suggested change

(cherry picked from commit b41b125c)

* fixes #1372

* done in ERC20Capped and ERC20Mintable

(cherry picked from commit fd4de776)

(cherry picked from commit f4d6f404)

(cherry picked from commit 269981ee)

(cherry picked from commit 34bc709b)

* signing prefix added

* Minor improvement

* Tests changed

* Successfully tested

* Minor improvements

* Minor improvements

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

This reverts commit a6889776.

* fixex #1355

* linting

* suggested changes

* Update BreakInvariantBounty.test.js

(cherry picked from commit 6ae041bc)

* signing prefix added

* Minor improvement

* Tests changed

* Successfully tested

* Minor improvements

* Minor improvements

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

This reverts commit a6889776.

* fixes #1358

* linting done

* suggested changes

(cherry picked from commit fa1dfbd1)

(cherry picked from commit a6889776)

* Add BigNumber support to expectEvent/inLogs (#1026)

* switched direct logs array check to expectEvent method in AllowanceCrowdsale.test.js

* Refactor expectEvent.inLogs function to use simple value number check

* Introduced should.be.bignumber method to compare BigNumber values

* Use expectEvent to test logs (#1232)

* Removed trailing space

(cherry picked from commit 536262f2)

* Add BigNumber support to expectEvent/inLogs (#1026)

* switched direct logs array check to expectEvent method in AllowanceCrowdsale.test.js

* Refactor expectEvent.inLogs function to use simple value number check

* Introduced should.be.bignumber method to compare BigNumber values

* Destructure transaction object to extract logs field

(cherry picked from commit 947de54c)

(cherry picked from commit 9be0f100)