"Value to great for base" errors

[Seriousness]

First of all thank you for this sweat little thing. Will save me a lot of work! The following error message does not seem to have negative impact on the function. So I personally dont need those fixed, but sadly am not good enough at writing software. This is more of a fiy ;)

./lib/regex-range-builder/range.sh 1092 1280
./lib/regex-range-builder/range.sh: line 84: ((: 092: value too great for base (error token is "092")
./lib/regex-range-builder/range.sh: line 84: ((: 092: value too great for base (error token is "092")
(109[2-9]|11[0-9]{2}|12[0-7][0-9]|1280)

 ./lib/regex-range-builder/range.sh 1080 1090
./lib/regex-range-builder/range.sh: line 84: ((: 080: value too great for base (error token is "080")
(108[0-9]|1090)