Check for every().day().at()

[runz0rd]

Description

Added a check if every().day().at() events are running correctly (instead of defaulting to next day)

Motivation and Context

For #83

Types of changes

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

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If you're unsure about any of these, don't hesitate to ask. We're here to help!

• My code follows the code style of this project.
• I have added/updated docstrings to the code I have touched.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have updated the Changelog to reflect my changes
• Has the changes been tested against a real Slack instance?

[sedders123]

Thanks for this! Looks great 😃