Implemented a new visuald-combined generator and added LDC/GDC support for VisualD projects. ...

The visuald-combined generator puts all dependencies together with the main package into a single project file instead of building dependencies as separate libraries.

Fix adhering to the selected configuration in the VisualD generator.

Introduce TargetType.none, fix handling of non-target project's dependencies and avoid continuous reinstalls of referenced sub-packages.

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

Fix generation of paths for sub projects.

Removing unnecessary output from unittest.

Compile fix for -inline compilation.

Fix object directory for -op switch in the VisualD generator and prepare for different project file directories. ...

Future versions may choose to put the project files in the .dub directory (the solution file will still stay in the project's root directory).

VisualD generator: Fix x64 builds and avoid building header only dependencies.

Not available optional dependencies are not wared upon.

Build library files of dependent projects in .dub/lib for generated VisualD projects.

Set the intermediate directory for VisualD projects to .dub/obj/<projectname> to avoid cluttering the project directory.

Tune build parameters of generated VisualD projects to avoid common compiler/linker bugs.

Fix build settings for dependencies in the VisualD generator. ...

Paths were relative to the dependency package path rather than the main package path where the project file is generated. Also, versions and other build settings were not only inherited from dependency to dependee, but also the other way around.

Move all source files outside of "dub" to "dub/internal".

Make (string) import paths relative in generated VisualD projects.

Quickfix for unresolved symbols with vibe.d examples and VisualD projects. See issue #57.

Unify pre/post-generate actions across different generators. Fixes #58.

Do not include source code files in the <libfiles> field of VisualD projects.

Fix target settings for dependencies in the Visual-D generator.

The VisualD generator did not set correctly the target type

Added a "subConfigurations" field and implemented proper configuration selection for dependencies.

Added "targetName" and "targetPath" build settings and some fixes. ...

Other changes:
 - Made the comparison for "excludedSourceFiles" path format agnostic
 - Fixed the output directory for the VisualD generator
 - Removed the "binaryPath" global setting (which was undocumented up to now)

See also #26 and #29.

Improved configuration selection for dependencies. ...

Still missing a way to select a specific configuration for each dependency.

The package description files are now added to IDE projects. Fixes issue #35.

The internal package representation is now JSON agnostic + streamlined configuration and dependency handling. ...

Still missing for the new configuration handling:
 - A way to select which configuration to use for a dependency (instead of the default "library")
 - New method to define a default configuration per platform and mode (application/library)

Source files are now collected at a central place instead of in every generator. ...

Package.getBuildSetting() now determines all source folders and recursively collects all source files there.

Implemented pre/post commands and --build=ddox + support "sourceFiles". ...

Other fixes:
 - fixed class Dub to work with other path than cwd
 - "files" has been deprecated in favor of "sourceFiles"
 - --build=docs also works now
 - Changed the way build flags are parsed (instead of checking every possible field for existence, all fields are iterated and their name is matched)

Fixed optimize and symdebug flag for visualD, supports unittest configuration.

Renamed all the "vibe" package to "vibecompat" to avoid conflicts.