Deprecate TargetManagerInterface::addUrl()

Since it is not required, simplifying the interface

Adopt TargetManagerInterface

Which allows us to implement various kinds of TargetManagers, amongst which the NullTargetManager, useful in case loading a stream fails.

Gracefully deal with unavailable target files

0.5.3

Initial approach to testing (#39)

Properly deal with empty XML Sitemaps

0.5.2

Properly deal with empty XML Sitemaps (#37)

Return PromiseInterface instead of Promise

Return PromiseInterface instead of Promise (#35)

Resolves https://github.com/dpovshed/octopus/issues/34

Use react-flux to load links

0.5.0

Explicitly require psr/log (#33)

Properly cancel timer

$timer->cancel() was deprecated as of https://github.com/dpovshed/octopus/releases/tag/0.4.2

Allow react/event-loop 1.0

0.4.2

Allow react/event-loop 1.0

Support for Symfony Console 4.x

0.4.1

Allow Symfony Console 4.x

Properly detect nested Sitemaps

0.4.0

Make TimerUI configurable (#29)