CHIRP

please allow lowercase letters and other alphanumeric characters like "!@#$%^{&*()+-=[]:\";'<>?,./"} in Radtel RT-490 and similar models, like Jianpai 8800 etc. By now, those are allowed by OEM software and the radios themselves, but CHIRP issues warning messages (as included) every time one tries to change any setting in a channel spreadsheet downloaded from the radio, which was previously programmed from OEM software. I'm quite sure nobody submitted this issue about this particular radio before but there were many analogous issues about other radio models. So please treat this as a generic and general issue. Now I did as You wished at the end of #9665. Thank You.