Incompatibility with the new WooCommerce version

Hi!

Your plugin looks great, but it seems not to work with the latest version of WooCommerce (I have 3.0.5 installed).

I’m getting a notice on the product page

> Notice: Action: woocommerce_product_write_panels has been removed since the version 2.6! Use woocommerce_product_data_panels action instead

And when I enter a custom field and save the product I get the error on the front end that the product_type was called incorrectly.

And

> Notice: woocommerce_get_template was removed since version 3.0! Instead, use wc_get_template. in /wp-includes/functions.php on line 3830