[chuck-dev] Small feature I added, not sure how to contribute

Hello, Last fall I realized arrays use a vector to store data, but there wasn't a member function to erase the data. There was a member function called erase(), but it used the map version of the array, instead of the vector. So I had to name the function pop_out. I made sure to keep the formatting consistent and everything. The only changes are in chuck_oo.cpp/h and chuck_lang.cpp/h. I don't have much experience in contributing to open source projects, where could I send the modified files to help contribute to ChucK? -Michael Golub