v1.3.1: Removed redundant "at" word (#6)

Removed `at` word from result of `Awesomite\StackTrace\StackTrace::__toString` whenever step does not contain
reference to called function, e.g.: `#0 (...)/file.php:13` instead of `#0 at (...)file.php:14`.

v1.3.0: v1.3 (#5)

* Added optional parameter $maxSerializableStringLen to Awesomite\StackTrace\StackTraceFactory::__construct

* Updated StackTrace::VERSION

* Updated rules for php-cs-fixer

v1.2.0

Updated CHANGELOG.md

v1.1.0

Added method Awesomite\StackTrace\StackTraceInterface::getVarDumper

v1.0.2: Use varDumper->dumpAsString instead of ob_* and varDumper->dump

in Awesomite\StackTrace\Arguments\Values\Value::dumpAsString

v1.0.1

Updated changelog

v1.0.0

v1.0.0

v0.12.0

Update CHANGELOG.md

v0.11.0

Update CHANGELOG.md

v0.10.4

reverted changes