v3.0.0

This release introduces a few new additional checks that are enabled by default:

• Use the "Null Coalesce" (??) operator where applicable
• Enforce usage of parentheses together with the new statement
• Enforce early return where applicable
• Forbid usage of core function aliases

Total issues resolved: 7

• 18: Propose semantic versioning of the library thanks to @Ocramius
• 19: Add Null Coalesce Operator thanks to @carusogabriel
• 20: New with parentheses thanks to @carusogabriel
• 22: Early return sniff thanks to @carusogabriel
• 23: ForbiddenFunctions: Add more basic blackisted aliases thanks to @Majkl578
• 24: Enable ForbiddenComments sniff thanks to @Majkl578
• 25: Whitelist @requires annotation thanks to @Majkl578