added fillColor for charts (only xlsx)

[CrazyBite]

@PowerKiKi , I think my develop branch already rebuilded ..

[PowerKiKi]

It seems there are code style errors. You can fix them automatically with ./vendor/bin/php-cs-fixer fix

[PowerKiKi]

This kind of leftover from a not well resolved conflict should be removed

[CrazyBite]

@PowerKiKi already fixed, but it's wrong again ...

[PowerKiKi]

It seems you used a different PHP-Cs-Fixer with a different configuration than the one shipped with this project (.php_cs.dist). I think a3355c2 should be reverted, and PHP-Cs-Fixer should be used with PhpSpreadsheet custom configuration, meaning that the changes should be minimal.

[CrazyBite]

I hate travis :C

[PowerKiKi]

To avoid waiting on Travis every time, you can reproduce the check done by Travis locally with the following lines (saved in check.sh):

#!/bin/bash
set -xe

./vendor/bin/php-cs-fixer fix --dry-run --diff
./vendor/bin/phpcs --report-width=200 --report-summary  --report-full samples/ src/ tests/ --standard=PSR2 -n
./vendor/bin/phpunit

[PowerKiKi]

I fixed a few stuff and merged it, thanks.

Next time we'll have to cover new code with unit tests though...