Clear compiler deprecation warnings

Deprecated:
- String.from_char_data!
- List.from_char_data!
- Kernel.list_to_atom
- Kernel.atom_to_binary
- Kernel.iodata_to_binary
- Kernel.integer_to_list
- Kernel.integer_to_binary
- Kernel.binary_to_integer
- Kernel.binary_to_atom
- defexception/3
- GenServer.Behaviour, Application.Behaviour, Supervisor.Behaviour
Replace Binary.Dict with maps
wip