Trivial: Fix indentation of a log statement

Trivial: Sort inner type in Dependency consistently

Dependency: Ensures call to version_ are on version-containing object ...

The initial port of Dependency to SumType kept full backward compatibility
for ease of use and review, but we can start now to weed out bad usages, if any.

Deprecate Dependency.matchesAny in favor of VersionRange

Trivial: Update comments on PackageManager ...

The previous comments were a bit misleading.

Merge pull request #2353 from Geod24/packman-cleanup ...

Some `PackageManager` cleanup

Signed-off-by: Jan Jurzitza <gh@webfreak.org>
Signed-off-by: Nicholas Wilson <thewilsonator@users.noreply.github.com>
Merged-on-behalf-of: Nicholas Wilson <thewilsonator@users.noreply.github.com>

Rename private packagemanager : Repository to Location ...

Avoid ambiguity with dependency : Repository and matches PlacementLocation.

Deprecate duplicated enum LocalPackageType -> PlacementLocation ...

Two enums, both have the same values, in the same order.

settings/selections: Only warn on unknown keys, add changelog ...

This will give users the time to adapt, without erroring right away.

Support escaped forward slashes in YAML parser ...

Integrate fix for issue dlang-community/D-YAML#302 .

Move environment read outside of DependencyResolver ...

Reading environment variables from random places in the code makes
the flow harder to follow, and unittesting harder.
This moves one environment reads to the `dub` module,
which performs many of them already.

Trivial: Change max_iterations type to ulong

Parse settings.json using configy ...

This will provide superior error messages to the user,
and match what we already do for `dub.selections.json`.

It also allows us to remove many fields from the `Dub` class.
Those fields existed so that we would not have to re-compute the data
from the JSON DubConfig was storing. Now that we use a simple struct,
and do the aggregation eagerly, all of that complexity can go.

File has moved.

Incorporate review by Jan Jurzitza <gh@webfreak.org>.

Don't require PERL regex in unittest.

Make unittest independent of byte value escape sequence.

Address review by WebFreak001.

Resolve deprecations.

Keep logging functionality out of the public API as requested in https://github.com/dlang/dub/pull/2124#issuecomment-813016939.

Fix/Update some tests and make some info messages more similar to original version of Dub

Fix rebase errors

Fixed stuff that shouldn't have been committed ...

(the .gitignore should be updated for people that runs tests locally...)

Fix non robust test (issue1091-bogus-rebuild) ...

The test was susceptible to interference from other tests, because it
assumed the 1-exec-simple project was clean, which may be not. The
reason that made the test work until now was that it happened to execute
before other tests that use the same project.

Now it ensures the project is clean before running.

This commit is part of PR #1490 because it was needed in order to make
the new colored-output test pass (which was interfering with this one).

Add new test for colored output

Fix some older DMD frontend versions not compiling logging.d

Fix really stupid error in previous commit

Replace --no-colors & --force-colors with --colors={auto|on|off}

Add --force-colors option to force colors enabled

Add --no-colors option to disable colors in terminal ...

Minor: changed function name in logging module