update metadata for version 1.6.5

remove --enable-voikko, it's useless without bundling whole voikki lib

make version number 1.6.3

bump to v1.6.2

upgrade bundled enchant to v1.6.0

bump to v0.6.1

add distribute_setup.py to the manifest

bump version number in setup.py

actually tagging 1.5.2 release

final ChangeLog for 1.5.0 release