ADKInitWithHexString does not align with ADKColorWithHexString

[salagadoola]

AppDevKit-1.2.2

• ADKColorWithHexString: handles formats like #RRGGBB, RRGGBB and also 0xRRGGBB (because of NSScanner)
• ADKInitWithHexString: handles the same set of formats

AppDevKit-1.3.0

• ADKColorWithHexString: handles formats like #RRGGBB, RRGGBB, #RGB, RGB
• ADKInitWithHexString: handles formats like #RRGGBB, RRGGBB, 0xRRGGBB

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These two methods should align with each other. But not sure how many formats should they support.

• Proposal 1: make both methods support #RRGGBB, #RGB, RRGGBB, RGB salagadoola/AppDevKit@4e72b97...282ef99
• Proposal 2: make both methods support #RRGGBB, #RGB, RRGGBB, RGB, 0xRRGGBB salagadoola/AppDevKit@4e72b97...c69840d

[salagadoola]

Both methods now support #RRGGBB, #RGB, RRGGBB, RGB, 0xRRGGBB