Up to [Platon] / libco

BUGS: added note about message recursion limit
NEWS: note the renaming of __co_mod_* functions
THANKS: thank some people
TODO: update wrt progress of items

MESSAGE TABLE CREATION [target: 0.2.1, done: 80%]

TABLE-DRIVEN DEFAULT MSG HANDLER [target: 0.2.2, done: 80%]
At least for now it should use simple cycle comparing received message id with
method table items one by one. When found, method shalt be executed, if not,
default action taken (i.e. "default" method invoked, which then could take
care of implicit delegation et cetera).

MORE INTELLIGENT CO_ATTR [target: 0.2.2, done: 100%]

MORE INTELLIGENT CO_METH_INI [target: 0.2.x, done: 0%]
These should not need explicit object name, just get it from last CO_OBJECT or
CO_METH respectively. The CO_METH problem is much harder to solve and also a
bit more annoying.

REFLEXION [target: 0.2.3, done: 40%]
A method should be available for each object that will provide outside world
with informations from method table of object. By means of copp it should be
incorporated in message table of every prototype object.

CLONE [target: 0.2.4, done: 10%]
This should replace current constructor approach. There will be constructor,
but only as a prototype creation mechanizm, and it will be autogenerated by
copp. It will set up message-handler table for the object and so on. But more
types of cloning should be available: shallow copy, deep copy, stand-alone,
etc. This will then affect way objects are coupled - as with default, method
tables are shared - and thus adding (or removing) method at runtime will
affect all such objects. Stand-alone cloning will create new method table and
thus new object group.

PLUGIN ARCHITECTURE [target: 0.2.5, done: 50%]
Create consistent framework built on libltdl for loading modules. Each module
shalt become object in loading process and export its interface this way.

SECURITY [target: 0.3.1, done: 0%]
Fix buffer overflows and alike.

CO_MAP ASSOCIATIVE ARRAY [target 0.3.2, done: 0%]
CO_BTREE BINARY TREE IMPL [target: 0.3.5, done: 0%]
THREAD SUPPORT [target: 0.4.x, done: 0%]