Make PyMySQL work inside App generated by py2app

Setting the 'optimize' level to 2 was causing pymysql imports to
fail. This sets the 'optimize' level to 1, which only results in
a 1 MB increase in size and solves the issue.
Update .exe's to .zip's following changes at BBS FTP site
Fix BBS50 species table

Ports b80f9cab2df4b03302e736beff01b8345af8c34f and
80f07a07649f46c6e7b2f21aaa743c41a5340438 and
14475dd98ea3b2d7251361fca5c3702ffe410f2a

into BBS50.
Merge pull request #147 from ethanwhite/fix-osx-pymysql

Make PyMySQL work inside App generated by py2app
Merge pull request #148 from ethanwhite/fix-bbs50

Fix BBS50 script