Add failing test case for #20
Fix #20: Trigger star-search after gd/gD
Remove unimportant options to simplify the plugin

- `g:oblique#enable_star_search`
- `g:oblique#enable_fuzzy_search`
Handle offset 0; apply offset in s:next
Add test cases for offset 0
Merge pull request #23 from nkouevda/offset

Handle offset 0; apply offset in s:next