Saran Balaji

Results 2 issues of Saran Balaji

## Description of new Instant Answer, or changes Added °C and °F for Celsius and Fahrenheit symbols as mentioned in #4673. Results should be given for 40°C in °F. ##...

Partially resolves https://github.com/Haider8/tmessage/issues/18 * Implemented encryption with a static key. * added TODO in get_encryption_key function.