Ikp3db

IMP: append '*' to var's name truncated by dump_frames()
FIX: var's name as returned by dump_frames()
REWORK: getProperties() and setVariable() now runs in debugged thread context
IMP: add globals in vars returned by dump_frames
Rework evaluate() to accomodate python3 print() function and improve handling of statements vs functions
FIX: Accomodate c9 evolution that automatically CGI escape evaluate output

IMP: pypi version check is now optional by default
IMP: Refine is_debugged flag name in get_threads()

* IMP: Improve multithread debugging by debugging (tracing) only one thread and allowing to select debugged thread
* FIX: Github 7 - suspend works only once

Add Python 3.7 support (debugger can now be invoked using the `breakpoint()` function).

IMP: correctly render exceptions having unicode messages
FIX: 'terminated' status handling.
FIX: avoid condition inequality in cloud9 plugin (PR5 courtesy of kzidane)

IMP: ikp3db now exits when debugged program terminates without sys.exit()
IMP: Implement a debugger 'status' and reconnect
IMP: add parameter --ikpdb-version to check version
IMP: Refine pypi version check
IMP: Add version check at startup
REWORK: Render types in a more readable way.
FIX: protocol now correctly send & receive unicode messages with special characters
FIX: avoid condition inequality in cloud9 plugin (PR5 courtesy from kzidane)
TYPOS: Correct various typos