add bstmap.hpp from a5 tarball
halfway on a5
download hashtablemap.hpp
add private hash function
implement bstmap
debug type problems with iterator class
partial debug. remove is not working
first version implementation of hashtablemap
replace standard list with my own raw node implementation
debug hashtablemap.hpp
continue debugging. next step: use stl::array
replace map with hashtablemap
correct one return missing problem
resolve const promises related to const_iterator
debug
correct stack implementation
implement more library functions
reimplement list to accept unlimited number of parameters
implement list-sort
realize builtin procedure cell