Some schema cleanup.

- Make Purpose section more concise.
- Remove old changelogs.
- Alphabetically sort databases and ecosystems.
- Add some missing databases (Curl, NVD).

README.md

@@ -1,22 +1,22 @@
 # Open Source Vulnerability Schema
 
 This is the repository for the Open Source Vulnerability schema, which is currently exported by:
+- [AlmaLinux](https://github.com/AlmaLinux/osv-database)
+- [Bitnami Vulnerability Database](https://github.com/bitnami/vulndb)
+- [Curl](https://curl.se/docs/vuln.json)
 - [GitHub Security Advisories](https://github.com/github/advisory-database)
-- [PyPI Advisory Database](https://github.com/pypa/advisory-database)
-- [Go Vulnerability Database](https://github.com/golang/vulndb)
-- [Rust Advisory Database](https://github.com/RustSec/advisory-db)
 - [Global Security Database](https://github.com/cloudsecurityalliance/gsd-database)
-- [OSS-Fuzz](https://github.com/google/oss-fuzz-vulns)
-- [LoopBack Advisory Database](https://github.com/loopbackio/security/tree/main/advisories)
-- [Rocky Linux](https://distro-tools.rocky.page/apollo/openapi/#osv)
-- [AlmaLinux](https://github.com/AlmaLinux/osv-database)
+- [Go Vulnerability Database](https://github.com/golang/vulndb)
 - [Haskell Security Advisories](https://github.com/haskell/security-advisories)
-- [Bitnami Vulnerability Database](https://github.com/bitnami/vulndb)
+- [LoopBack Advisory Database](https://github.com/loopbackio/security/tree/main/advisories)
+- [OSS-Fuzz](https://github.com/google/oss-fuzz-vulns)
 - [OSV.dev maintained converters](https://github.com/google/osv.dev#current-data-sources)
-- [VMWare Photon OS](https://github.com/vmware/photon/wiki/Security-Advisories) (unofficial)
-- [RConsortium Advisory Database](https://github.com/RConsortium/r-advisory-database)
+- [PyPI Advisory Database](https://github.com/pypa/advisory-database)
 - [Python Software Foundation Database](https://github.com/psf/advisory-database)
-- [Curl](https://curl.se/docs/vuln.json)
+- [RConsortium Advisory Database](https://github.com/RConsortium/r-advisory-database)
+- [Rocky Linux](https://distro-tools.rocky.page/apollo/openapi/#osv)
+- [Rust Advisory Database](https://github.com/RustSec/advisory-db)
+- [VMWare Photon OS](https://github.com/vmware/photon/wiki/Security-Advisories) (unofficial)
 
 Together, these include vulnerabilities from:
 -   AlmaLinux