YITH WooCommerce Questions And Answers Premium 1.34.0

• Update: Plugin fw to version 3.0

• New: support to WooCommerce 3.2.5
• Dev: new filter 'yith_wcqa_allow_user_to_reply'

Dev: new filter 'yith_ywqa_no_answer_text'
Tweak: email validation process on submit question or answer