[Feature Request] Filter as partial match

[tadashi-aikawa]

trafficstars

Hi, @phibr0 .

Thank you for your great plugin!

I would be glad if it would be great to enable the filter prefix not only to match but also partial match. In my case..

I want to insert these emojis.

Best regards.

[I-Dont-Remember]

If all parties agree, I think this can be closed for now with #24 unless there was more functionality expected.

[KraXen72]

i have rewritten significant parts of this plugin here and i am waiting for it's approval here. Feel free to use my improved version, as i plan to maintain it further and it fixes this issue.