Add ignore new lines on concatenation spacing

[bramalho]

Q	A
Branch?	master
Bug fix?	yes
New feature?	yes
BC breaks?	no
Deprecations?	no
Tests pass?	yes

PSR rules should ignore missing concatenation when there's a new line after.

Changes

Added

• rule ignoreNewlines to psr2

Example

 127 | ERROR | [x] Concat operator must be surrounded by a single space
     |       |     (Squiz.Strings.ConcatenationSpacing.PaddingFound)

even though there was a space in the concatenation.

Tests

After adding the rule, the was no more errors. Removed some spaces from the concatenations to check the errors - there was the error.