Additional support for Heroku deployment

• enable deployment on heroku platform

Unique centers in a day

• daily digest report now sends the total number of unique centers found in the day

Add delay to daily digest reporting

• add delay timer as config
• delay daily report after email last execution
• compare month for last execution of the day

Schedule every hour

• config value updated to run cron every hour
• daily digest report modifications

Introducing Daily Digest and Welcome Emails

• daily digest report
• welcome email when no slots are found
• HTML builder
• logger
• error handlers

First release

• vaccination slots by single pin code.
• vaccination slots by multiple pin codes.
• vaccination slots by district name.
• email alert to multiple beneficiary email address.
• customisations using config values.