problem with serial parity other than none

[JojoS62]

Is this repo still maintained?
I found this problem when I tried to use this modbus lib with serial and parity even:
https://forums.mbed.com/t/unbufferedserial-sending-with-parity-even-does-not-work/22377/2

The portserial.cpp does not regard the parity argument. I had fixed this, but still no success. Then I found that the enable_output function starts the initialization again and did not restore the parity/wordlength settings, so that the modbus Ack was sent with wrong framing.

I think the the intention of using the enable function is to enable/disable the according ISRs, but the function also does all init stuff.