config should handle lower and upper case checks

[hemz10]

Overview

Currently the package accepts only lower case letters, when passing upper case it throws an error.

Steps to Reproduce

Steps to reproduce the behavior:
1.In the config json file give the chain name in upper case
2. Observe the output

Expected Behavior

It should internally convert to lower case and continue with execution. execution should not stop

Screenshots

[shanithkk]

Fixed in #122

[hemz10]

Issue is still reproducible.

[Mr-Nobody21]

Fixed in pr #176

[hemz10]

Closing this issue as fixed