Release v2.7.0

Allow to specify a payment method type in Lyra.process() using the options dictionary.

Breaking Changes:

Keys for options dictionary in the initilization method

-Rename Lyra.apiServerName to LyraInitOptions.apiServerName
-Rename Lyra.themeFileName to LyraInitOptions.themeFileName
-Rename Lyra.cardScanningEnabled to LyraInitOptions.cardScanningEnabled
-Rename Lyra.applePayMerchantId to LyraInitOptions.applePayMerchantId
-Rename Lyra.applePayMerchantName to LyraInitOptions.applePayMerchantName

Keys for options dictionary in the process method

-Rename Lyra.customPayButtonLabel to LyraPaymentOptions.customPayButtonLabel
-Rename Lyra.customHeaderLabel to LyraPaymentOptions.customHeaderLabel
-Rename Lyra.customPopupLabel to LyraPaymentOptions.customPopupLabel