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

Add warning for package names with upper case letters, but handle them gracefully.

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

Added very simple hashing of a package.

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

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)

Reverted adding the dependency, when "dub install pkg" is called. Creating a dependency should not be done through install. Has impact on #12. ...

Additionally added the uninstall feature.

stashpopcommit

Avoid using "~" in paths. Fixes issue #23.

When the user calls install from the command line, a dependency will be added to the project's package.json. However, this will reformat that file. Should now perform more like user expectations mentioned in #12.

Fixed naming convention for enum InstallLocation and avoid reinstalling packages that are already up to date.

Fixed "dub upgrade" when a package is stalled user or system wide.

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

Another round of replacing invalid uses of to!string(Path) with Path.toNativeString().

Disabled curl peer verification and fixed writing of binary data to files. Works on Windows and OS X now.

Removed the vibe.d dependency by dragging in a minimal set of interfaces of vibe.d ...

The interfaces are reimplemented using standard Phobos functionality. Calls to
these interfaces will be gradually replaced by direct Phobos calls.

Avoid use of deprecated functions + fixed package installation.

DMD 2.060 compile fix.

Added support for local package definitions in package dependencies and fixed recursive dependencies.

Added the "list-locals" command.

Fixed adding a local package when no other packages are installed yet.

Implemented several new commands and moved the download location to the temp folder. ...

- dub install installs a package in the user/system repository or in the current directory
 - dub uninstall is not yet implemented
 - dub add-local adds a local folder as an installed package (useful so that projects use a git cloned package instead of the github one)
 - dub remove-local removes a local folder again as an installed package

Implement basic support for user/system installed packages and local packages. ...

Also removed a lot of (caught) exceptions. The installation/uninstallation code was moved and modified to the new package manager, which is now responsible for all locally installed packages.