receiveBufferPeakCount, new error flags
Updated documentation, as mRolloverEnable is true by default (thanks to PatrykSSS for reporting this documentation error);
Added ACAN2515::receiveBufferPeakCount method, forgotten in previous releases (thanks to qwec01 for reporting this bug);
New error flag: kCannotAllocateReceiveBuffer;
New error flag: kCannotAllocateTransmitBuffer0;
New error flag: kCannotAllocateTransmitBuffer1;
New error flag: kCannotAllocateTransmitBuffer2.