* Adding solhint, working on style fixes.
* Upgraded to solhint 1.5.0.
* Removed all references to Solium
* Updated mocks to make the pass the new linter rules.
* Reformatted the .solhint.json file a bit.
* Removed Solium configuration files.
* Remove Solium dependency.
* Add comment explaing disabled time rule in TokenVesting.
* Revert to the old (ugly?) style.
* Revert SignatureBouncerMock style.
* Fix ERC165InterfacesSupported interface.
* Now compiling in a separate directory using truffle 5.
* Ported to 0.5.1, now compiling using 0.5.1.
* test now also compiles using the truffle 5 hack.
* Downgraded to 0.5.0.
* Sorted scripts.
* Cleaned up the compile script a bit.
* Added PausableCrowdsale contract
* Changed inheritance order to prevent "Linearization of inheritance graph impossible" error
* Updated mock PausableCrowdsaleImpl to new constructor syntax
* Broke function definition to multiple lines
Comply with new max line length
* Rename events to past-tense in PausableCrowdsale test
* Removed should.be.fullfilled from PausableCrowdsale tests
* Change import assertRevert to require in PausableCrowdsale tests
* Remove dependency on chai-as-promised and added BigNumber support in PausableCrowdsale tests
* reindent solidity with 4 spaces
* add missing view modifier in _preValidatePurchase
* convert assertRevert to new shoulFail helper
* add new setup helper
* use expectEvent
* convert to assert to chai should style
* add description to beforeEach blocks
* extract common step to beforeEach
* improve documentation
* revert inheritance error
* move PausableCrowdsale into crowdsale/validation
* make documentation more specific
* put whitespace in line with convention
* improve test suite account names
* undo beforeEach descriptions
* simplify tests
* fix transaction senders to be the anyone account
* make transaction senders more explicit
* remove mocha only
