A patch for the Proton24 compiler to bring it up to version

The patch corrects the following items:

Corrected the high level use of the Bra mnemonic when the destination parameter is $ + n or $ - n.
Corrected USART3 and USART4 declares.
Corrected the Str modifier when an Array is used instead of a String.

The patch can be downloaded from here:

Proton24 compiler version patch