Improve tooltip transparency and color handling

Update README.md

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Merge pull request #36 from kabyru/main

Add param to __init__ to enable --topmost

Create FUNDING.yml

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Create FUNDING.yml

Update README.md

Update README.md

Added dynamic offset, changed default alpha.

Update ctk_tooltip.py

Dynamic offset added

Calculates the appropriate offset based on the available space on the right side of the widget when the space is limited.

Update ctk_tooltip.py