Merge @nicferrier doc-patch.
Added `sp-show-enclosing-pair-commands` customize option. A list of commands after which the enclosing pairs are highlighted. Useful with barf/slurp (default value)
Added `sp-highlight-current-sexp`. (show-smartparens-mode feature)
Enhanced `sp-get` to accept multiple forms
Added `sp-prefix-save-excursion`.
Added `sp-extract-before-sexp` and `sp-extract-after-sexp`.
Enhanced `sp-navigate-reindent-after-up` customize. Now can accept per-mode settings.
Update version & Legal stuff