Hi Leonard,

thanks for starting this!  A few stylistic comments inline.

Leonard Randall <leonard.a.randall@gmail.com> writes:

> diff --git a/lisp/org-bibtex.el b/lisp/org-bibtex.el
> index ed645e5..848d0e4 100644
> --- a/lisp/org-bibtex.el
> +++ b/lisp/org-bibtex.el
> @@ -270,20 +270,31 @@ with underscores, and characters that are not permitted in org
>  tags will be removed.
>
>  If t, local tags in an org entry will be exported as a
> -comma-separated string of keywords when exported to bibtex.  Tags
> -defined in `org-bibtex-tags' or `org-bibtex-no-export-tags' will
> -not be exported."
> +comma-separated string of keywords when exported to bibtex. If

Make sure to end sentences with two spaces.

>  (defcustom org-bibtex-no-export-tags nil
>    "List of tag(s) that should not be converted to keywords.
> -This variable is relevant only if `org-bibtex-export-tags-as-keywords' is t."
> +This variable is relevant only if `org-bibtex-tags-are-keywords' is t."
>    :group 'org-bibtex
>    :version "24.1"
>    :type '(repeat :tag "Tag" (string)))

I fixed this docstring from the maint branch, you may need to pull
again and rewrite your changes.

> +(defcustom org-bibtex-inherit-tags nil
> +  "This variable controlls whether inherited tags are included

The first line of the docstring should be a sentence.

> +when converting org tags to bibtex keywords. It is relevant only
> +if `org-bibtex-tags-are-keywords' is t. Tag inheritence itself is
> +controlled by `org-use-tag-inheritence' and
> +`org-exclude-tags-from-inheritence'"

There is a missing fullstop at the end, and missing double-space
between sentences.

> +  :group 'org-bibtex
> +  :version "24.1"
> +  :type 'boolean)

Use

  :version "25.1"
  :package-version '(Org . "8.3")

here, so that users will know the option is new in Org 8.3 (the next
version that will be released from the master branc) and in Emacs 25.1
(the next Emacs stable version that will contain 8.3.)

Otherwise, the patch looks good.  Please resubmit it from a fresh pull
with the modifications I suggested.

Thanks in advance!

--
 Bastien