Just pushed v1.0.3. No major changes, but you can now use all 0x5D tags for EBOOT.BIN signing and the OPNSSMP encryption is now fixed (the resulting file is encrypted with the right key).
Also, I've isolated all MinGW dependent values which were causing issues when compiling under native Linux. I've also provided binaries specific for each OS due to some discrepancies between the compilers.