The = shortcut for dot patterns is no longer deprecated
The = shortcut for dot patterns is no longer deprecated

According to the discussion in the github issue we decided that the =
shortcut was useful. Rather than defining it as deprecated we will
simply put a warning in the documentation and try to fix the problem
in liblouis.

Fixes #500

liblouis/liblouis,BueVest/liblouis,BueVest/liblouis,hammera/liblouis,hammera/liblouis,liblouis/liblouis,liblouis/liblouis,liblouis/liblouis,hammera/liblouis,liblouis/liblouis,BueVest/liblouis,BueVest/liblouis,hammera/liblouis,BueVest/liblouis,hammera/liblouis,BueVest/liblouis,liblouis/liblouis,hammera/liblouis