Release v1.0.5

• fix help not available
• implement auto-restart on end of tree
• remove dots and commas on singlechoice selection inputs
• handle unicode decode error in botli
• botli: handle server stopping during session
• fix interpretation of accents in botli
• handle key interupt in botli
• selectionstep inherits messagestep
• make timeout check inteval configurable
• refactor unit module
• implement remove_units
• use processes in testing.py
• add mutex to timeout_handler
• make SelectionStep inherit MessageStep