Merge pull request traderinteractive#73 from kgun1212/master

Allow Null for URL Filter

Merge pull request traderinteractive#72 from chadicus/fea/string-filter

Allow String::Filter to accept scalars and objects with __tostring

Merge pull request traderinteractive#71 from chadicus/bug/of-array

Ensure only arrays are passed to Arrays::ofArrays()

Merge pull request traderinteractive#65 from chadicus/fea/custom-errors

Allow custom error messages to be passed in filter spec

Merge pull request traderinteractive#63 from chadicus/dev/php7

Dev/php7

Merge pull request traderinteractive#60 from chadicus/fea/date-allow-…

…timestamp

Allow integer timestamps in DateTime::filter

Merge pull request traderinteractive#54 from chadicus/timezone

Add DateTimeZone

Merge pull request traderinteractive#43 from nubs/master

Add String::explode and Arrays::flatten filters

Merge pull request traderinteractive#38 from chadicus/email

Add email filter

Merge pull request traderinteractive#32 from gaillard/master

Default support and coversDefaultClass