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Merge pull request #7 from mjard/master

Line numbers for some parser errors
Embiggened map
END now actually ends the program
Added new CALLFF and SCAN methods
Documenting SCAN opcode
Lots of various opcode changes
Document NEQUAL opcode
Clear uservm on new code, this fixes some strange edge cases
Added POPN opcode
How did CALL break like this
Removing some extra debug statements
Update sample code for TESTTGOTO and CALLFFI.

TESTTGO is now parameterless.
CALLFFI is deprecated. Change to CALLFF. 
Merge pull request #10 from mjhale/patch-2

Update sample code for TESTTGOTO and CALLFFI.
BOTCONTROL docs now use official opcodes, not aliased versions
Allow cli execution to provide traceback on SIGINT
Comments anywhere, user defined constants
Allow users to see what the bot is doing