Prepare 2.0 Release

[TomasVotruba]

Related Changes

• cleanup composer
• [x] add PHP 7.1 types
• [x] add basic ecs
• [x] add phpstan
• [x] remove fluent interfaces
• [x] remove redundant docblocks
• [x] apply PSR-2 + coding standard
• [x] finalize classes
• [x] use common /src and /tests PSR-4 structure

Inspiration from old fork

• https://github.com/Symplify/Symplify/pull/494

---

Changelog

• fluency removed to have 1 consistent path to every method

# before
$git->add('*')
    ->commit('Initial commit.');

# after
$git->add('*');
$git->commit('Initial commit.');

• GitWorkingCopy returns output right away; __toString() + getOutput() method in favor of this

# before
$output = $git->add('*')->getOutput();
$output = (string) $git->add('*');

# after
$output = $git->add('*');

• GitCommand

# before
array_unshift($argsAndOptions, 'name');
GitCommand::createInstance($argsAndOptions);

# after
new GitCommand('name', $argsAndOptions);

• clone() magic removed

### before
$gitWrapper->clone(...);

### after
$gitWrapper->cloneRepository(...);

[TomasVotruba]

@carusogabriel Thanks for review. I've added few more structural changes, it should be ready to merge now.

[cpliakas]

@TomasVotruba @carusogabriel Great job with the 2.0 release, I love all of the modernization and bug fixes. I very much appreciate your efforts on injecting life back into this library.

[carusogabriel]

@cpliakas @TomasVotruba did all the work, so :clap: to him :smile: I'll be adding some features based on @k88hudson's Git Flight Rules soon :man_technologist:

[TomasVotruba]

@cpliakas Thanks a lot :100: I'm glad you like those changes. Thanks for reaching back to me