Trivial: Move relevant documentation from Dependency.versionSpec to VersionRange

Overrides: Make it clear that only VersionRange can be overriden ...

The code was always assuming overrides were VersionRange,
as trying to do 'dub add-override' would call 'Dependency'
constructor with a string, which forwards to VersionRange.fromString.
However, when using dub as a library, this assumption was much less obvious,
notably because the fields are public.
With this change, we make sure library users do not misuse overrides.

Use std.sumtype for PackageOverride too ...

Like Dependency, we only were using one of those two fields,
but it was not readily obvious before, and we relied on one
of them being empty to read the other one.

Trivial: Pass a Repository to loadGitPackage

SDL: Use visit instead of multiple if when parsing Dependency

Remove `Dub.updatePackageSearchPath` ...

This function was essentially two functions: One when an override was set,
another one for the common case. However, the function is private,
and the number of call sites is limited, so it's better to inline
the call at the caller site. Once that was done, it became obvious
it only ever has an effect once, when the Dub instance is constructed,
as we don't modify this environment variable.
Thus, we can inline it in the constructor, and remove the dead branches.

Configy: Implement soundexer-based key-matching in strict mode ...

This scales much better, e.g. when using Configy with dub's 54 config keys.

Integrate Configy colored output with dub's

Remove a few usages of old version-spec approach from test-suite

improve man page generation

make command exit codes more consistent

dub search: Improve text, rename parameter ...

The 'query' name is inaccurate, as we only ever expect a package name.

Dub.fetch: Remove a redundant getPackage call ...

Since storeFetchedPackage already returns the Package.

Trivial: Deprecate a compatibility overload of Dub.remove

dub.fetch: Do not catch Exception when a local package can't be loaded ...

Given how simple the function being called is,
there is no reason for us to ignore this error.

Also add options when we combine buildsettings (#2363) ...

* Also add options when we combine buildsettings

* include all the buildsettings in add(bs)

Co-authored-by: WebFreak001 <gh@webfreak.org>

Revert "Default `dub init` to SDL" ...

This reverts commit 3d0d867.

Default `dub init` to SDL ...

Átila wants to throw out dub.json, so this is the first step to discouraging dub.json

Dependency: Expose `visit` to `match` on `SumType` ...

To do so, we need to expose `VersionRange`.
The function is a free function as it otherwise triggers
a deprecation for dual contexts due to the template parameters.

Add some const qualifiers to Repository

Trivial: Remove workaround for DMD v2.070

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.