Revise author order criteria

AUTHORSHIP.md

@@ -10,16 +10,13 @@ To do so, we will attempt to define:
   providing ideas, fostering the community, etc.
 
 The following are the ways in which individuals who have contributed will be
-recognized.
+recognized. 
 
 > **Note**: These policies are not set in stone and may be changed to
 > accommodate the growth of the project or the preferences of the community.
 
-## The `AUTHORS.md` file
+**This document applies to all parts of the Fatiando a Terra project.**
 
-Anyone who has contributed a pull request to the project is welcome to add
-themselves to the `AUTHORS.md` file. This file lives in the repository and is
-packaged with distributions. This is an optional process.
 
 ## Changelog for each release
 
@@ -28,47 +25,72 @@ since the previous release will be mentioned in the changelog entry. If their
 full name is available on GitHub, we will use it. Otherwise, we will use the
 GitHub handle. This is a way of saying "Thank you".
 
+
+## The `AUTHORS.md` file
+
+Anyone who has contributed a pull request to the project is welcome to **add
+themselves to the `AUTHORS.md` file**. This file lives in the repository and is
+packaged with distributions. 
+
+This is an optional process and is **opt-in**. Names and affiliations will be
+sourced from this file for publishing source code archives.
+
+
 ## Authorship on Zenodo archives of releases
 
 Anyone who has contributed to the repository (i.e., appears on `git log`) will
-be invited to be an author on the Zenodo archive of new releases.
+be included as an author on the Zenodo source code archive of new releases.
 
-To be included as an author, you *must* add the following to the `AUTHORS.md`
+To be included as an author, you must add the following to the `AUTHORS.md`
 file of the repository:
 
 1. Full name
 2. Affiliation (if omitted, we will use "Unaffiliated")
 3. ORCID (optional)
 
-The order of authors will be defined by the number of commits to the repository
-(`git shortlog -sne`). The order can also be changed on a case-by-case basis.
+The first author will be "Fatiando a Terra Project".
+Other authors will be listed in alphabetical order by last name.
+The following statement will also be included in the description:
 
-If you have contributed and do not wish to be included in Zenodo archives,
+> Note: Authors are listed in alphabetical order by last name.
+
+If you have contributed and **do not wish to be included** in Zenodo archives,
 there are a few options:
 
 1. Don't add yourself to `AUTHORS.md`
 2. Remove yourself from `AUTHORS.md`
 3. Indicate next to your name on `AUTHORS.md` that you do not wish to be
    included with something like `(not included in Zenodo)`.
 
+
 ## Scientific publications (papers)
 
 We aim to write academic papers for most of your software packages. Ideally, we
 will publish updated papers for major changes or large new components of the
 package.
 
-To be included as an author on the paper, you *must* satisfy the following
+To be included as an author on the paper, you must satisfy the following
 criteria:
 
 1. Have made a contribution to the repository or significant non-coding
    contributions.
 2. Add your full name, affiliation, and (optionally) ORCID to the paper. These
-   can be submitted on pull requests to the corresponding paper repository.
+   can be submitted by pull requests to the corresponding paper repository.
 3. Write and/or read and review the manuscript in a timely manner and provide
    comments on the paper (even if it's just an "OK", but preferably more).
 
-The order of authors will be defined by the number of commits made since the
-previous major release that has an associated paper (`git shortlog
-vX.0.0...HEAD -sne`). The order of any author who hasn't made any commits will
-be decided by all authors. The order can also be changed on a case-by-case
-basis.
+If project (collective) authorship is allowed by the journal:
+
+The first author will be "Fatiando a Terra Project".
+Other authors will be listed in alphabetical order by last name.
+A statement will also be included about the author order.
+
+Otherwise:
+
+The order of authors will be defined by the number of commits authored 
+since the previous major release that has an associated paper 
+(`git shortlog vX.0.0...HEAD -sne`). 
+The order of any author who hasn't made any commits will be decided by 
+all other authors.
+
+In both cases, the order can also be changed on a case-by-case basis.