SPIFBlockDevice Not Compiling

[elidonner]

Similar to #8 except I have gotten a step further.

Using the Arduino-cli I am able to link a direct reference to where SPIFBlockDevice.h is stored. However now anytime I call a function defined in the header, even the constructor, I get:
undefined reference to `SPIFBlockDevice::SPIFBlockDevice(PinName, PinName, PinName, PinName, int)'

From the ArduinoCore-mbed README I'm wondering if the libmbed.a was not made with support for the BlockDevices?

Thanks for the help.

[elidonner]

Issue fixed in PR #10.