small oddities

another small odditie i encountered during dios using, that may not be a big drawbacks, but may cause minimal user experience deterriation:

1. It took me a while to accept, in python indexing always starts with 0, instead of, with 1 - and now i have to learn, that dios.indexes starts with 1... thats too much for me

2. This one may nearly be a bug or at least result from some unintended underlying behavior: when trying to assign non unique variable names to dios columns with dios.columns = ['a','a'] for example, a ValueError gets thrown, as expected. But after having done this, the dios seems to be somehow broken - at least calling dios or dios.loc[:,:] results in errors getting thrown instead of the dios to be displayed in the console (Although before calling dios.columns = ['a','a'] it was a perfectly fine, well filled dios with good data).