Keeping track of the saved json file in the journal and some smaller changes.

Make "dub.json" the primary choice for a package description and handle "package.json" as a fallback.

When a package having externally defined subpackages is installed, they work. Currently not tested with the registry.

Automatic discovery of sub-packages added to package manager.

Inside of the PackageManager, change type of m_packages from Package[][string] to Package[], as there is no need for an associative array, currently.

Fixed typos.

Improve error message when removing a cached package fails due to a missing installation journal.

Rephrase enforcement message in addLocalPackage and conditionally specify a version when loading the local package list. See #194.

Add support for "add-local" without version name.

Rename badly named PackageManager.get to storeFetchedPackage.

Don't upgrade unmanaged packages. Fixes #171. ...

Also renames Action.Type.get to fetch.

Adjust style of dub.internal.vibecompat.data.json to latest vibe.d and use vibe.data.json if available.

Remove 'installation' references. ...

Change dub wording to stop referring package retrieval as installation, both in code and commands.

Implement building of specific packages, including sub packages.

Move dub.utils to dub.internal.utils and update copyright dates.

#119 Better feedback for dub add-local, dub remove-local

Fix compilation.

Moved Journal into packagemanager.d. Removed Project.writeMetadata as it is not used. Documentation typos and updates.

Only allow zip file prefixes of one directory deep. Partial fix for #118.

Fix determining the zip root folder.

A better log message in case of installing a package over a previous installed package and a bug fix, when the install .zip file is not containing any folders.

Avoid loading the same package referenced by path multiple times. Fixes #98.

Refactor code. ...

Moved and renamed RegistryPS to dub.packagesupplier, made Dependency a struct and improved code convention adherence.

Avoid creating an additional Package instance for the main project if already loaded. Fixes #87.

Rename log levels to be in line with the latest vibe.d versions.

Fix header-lib's package.json and improve diagnostic output.

Implemented sub packages. Fixes #67. ...

Sub packages are referenced using the syntax "main-package-name:sub-package-name" and can be defined using a "subPackages" field or by putting package.json files in subdirectories of the main package.

Avoid reloading local packages multiple times during a single run.

fixed uninstallation

Add support for DUBPATH and "add-path" + change the default installation location to the DUB user path. Fixes #64. ...

This change allows to specify a number of directories in addition to the system and user DUB package directories to search for local packages.

Full list of changes:

 - Add support for the DUBPATH environment variable (a (semi-)colon separated list of paths)
 - Add support for "dub add-path" and "dub remove-path" to add static search paths
 - The branch of local packages with no "version" field in their package.json is now inferred using "git rev-parse"
 - The structure of the user/system package directories is changed from "packages/<packname>/<packver>" to "packages/<packname>-<packver>"
 - There is no project local package directory (".dub/packages") anymore - packages are instead installed to the user package directory by default
 - Upgrading and uninstallation is partially broken in this commit - will be fixed later