Instruction set changes.
Assembler moves to flex.
VM is not compatible with new ISA yet.
Directory 'common' splitted up to 'include' and 'lib'
Documentation cleaned up
Directory 'sources' renamed to 'examples', although examples are still broken.
Documentation and assembler a bit syncronized.
Versions are accounted now (.module, .import). .import fixed.
.extern directive done.
Operands have internal types now.
Examples updated.
.data, .var and .arg have the same syntax.
Debug option appears in "-help".
Some code cleanup.
New type "Symbol" in place of old vague "String".

This is pure abstract type (with hidden realization),
and it is intended to be shared by subprojects.
Realization changed: String was C-string, Symbol is Pascal-like -
with length byte at the start. This could make comparision a bit faster.
Redundant symbol copying eliminated. Symbols are non-copyable now.
Symbol table prepared for shared use.
Symbol operands done. Symbols are not duplicated now.
Support for .data in RMD.
Tasks planned for future development.
Starts moving to abstract addresses.

Instead of fixed bits types for addresses, typedef's should be used.
It makes code cleaner, and changing to different width becomes easy.
Maybe, it could be better to wrap types in structures to avoid implicit
type conversions?
Exceeded memory consumption on symbols fixed.