removed composer require for php-platform/persist

maintaining same errorlog file throughout the testMethod

display error_log only if the test has failed

ModelTest is improved to handle and assert error traces during the tests

added template tests for models

included php-platform/persist as dependency

bug fix in SessionImpl

Merge branch 'master' into v0.1

# Conflicts:
#	src/Tests/PersistUnit/ModelTest.php

resetting connection in setUpBeforeClass

improvements for Model Test

some improvements and bug fixes