Use browse-kill-ring for matching entries selection.

Also, fix `unbalanced parens` errors when using sexp expanding.
Add package dependency.

Fix #8
Add paragraph expander, as is desired by Fuco1

Fix #7
Update readme for dependency on browse-kill-ring

Signed-off-by: Bao Haojun <baohaojun@gmail.com>
Add a binding for skeleten-ecompletion.

To align it with the browse-kill-ring, because when they differ for no
reason, it is very annoying to mistake one with the other.

Signed-off-by: Bao Haojun <baohaojun@gmail.com>
Make case-fold-search more smart.

Signed-off-by: Bao Haojun <baohaojun@gmail.com>
symbol completion should respect mark-active

Signed-off-by: Bao Haojun <baohaojun@gmail.com>