Reverting unwanted commit.

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.

Add "release-nobounds" build type. Fixes #141.

Rename some BuildOptions to avoid D keywords.

Do not create an application configuration if the detected application main file is the same as the detected library main file.

Fix running "dub test" on an explicitly named package.

Implement the "test" command.

Add support for a "mainSourceFile" field. ...

The main source file is used as the root to access the whole package. This is important for dependency based building, such as with RDMD and for special build kinds, such as for a future unit test command. This also improves the robustness of "dub build --rdmd".

Main source files are automatically inferred as follows, if not explicitly given:
 1. search first in "source/", followed by "src/"
 2. take the first match of ("app.d", "main.d", "<pkgname>/main.d", "<pkgname>/<pkgname.d>") as the main file for the automatic "application" configuration
 3. take the first match of ("<pkgname>/all.d", "<pkgname>/package.d", "<pkgname>/<pkgname>.d") as the main file for the automatic "library" configuration

Properly infer build options and target names when collecting package build settings without a configuration. ...

Also don't assert when a "targetType": "none" package doesn't have a target name.

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

Move PlacementLocation to the proper module.

Some "dub describe" output corrections.

Improve warning message for non-existent source/import paths.

Import and string import files are now added to generated VisualD projects and "dub describe".

Remove dub.internal.std.process compatibility code as it doesn't support browse() and the compile status on older DMD versions isn't tracked anyway.

Fix error message in case of an empty source path. See #149.

Remove 'installation' references. ...

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

Add a "targetFileName" field to the output of "dub describe" (a platform and target type specific version of "targetName"). Fixes rejectedsoftware/dub-registry#25.

Let Package.hasDependency return true if no configuration is specified and _any_ configuration has the dependency. Fixes #137.

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

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

Improve log messages.

Parse configurations after all global settings have been parsed. Fixes #113.

Don't exclude application file in the auto-inferred "library" configuration if the target type is explicitly set to library. Fixes #105.

Fix handling of packages with no configurations. See also #99.

The dependency in terms of the DependencyGraph is the base package and not the sub package. ...

Only enqueue one update action for the same package.

Implement a new graph based algorithm for configuration resolution. ...

The old algorithm failed to chose a valid configuration for many complex dependency graphs (worked reliably only for trees).

Fix handling of global build settings for packages without configurations.

Generalize common compiler switches in the form of a BuildOptions enum. ...

Related changes:
 - translation of DMD compiler switches to other compilers is generalized
 - application of build requirements is generalized
 - added support for debug versions
 - supporting almost all compiler settings for generated VisualD projects now