support matching from beginning of item and support scoring based on …

[750]

This addresses 2 things:

1. default search matches symbols from end of line, so for query:123 item:123abc123 the match is displayed as 123abc123, not *123**abc123. This is unintuitive, probably legacy bug. New option -z allows to fix this

2. now that we have sensible matching let's support scoring items with early matches higher via option -a (Search results not the most relevant #19)

-a -z query:123 123abc > abc123
-z query:123 123abc == abc123

-a query:123 123abc < abc123
no options query:123 123abc == abc123

[chipsenkbeil]

Makes sense to me! @750 thoughts on adding you as a collaborator to the repository? Would give you more freedom to manipulate it and publish new releases without me being a bottleneck.

[750]

@chipsenkbeil That would be nice (though I don't mind the bottleneck). I'm not sure if there's gonna be a lot of activity from me anytime soon, but why not

Thanks!