Fix IPython issues when sending multiple lines

[zcesur]

Fixes #38 and #63 by taking advantage of the bracketed paste mode (instead of using %cpaste).

[elmerehbi]

Suffering from this as well.

• Tmux 2.3
• Vim 8.0
• Slimux cloned on April 25, 2018
• Ipython 5.6.0

[laseryuan]

Yes, I tried it and it does the same as SlimuxREPLSendLines. So does SlimuxREPLSendBuffer. I don't know if this helps but I tried sending the following commands

print("hello, world")
a = 3
b = 9
print(a+b)

to python 2.7.12 and got the following results

>>> 0~print("hello, world")
File "<stdin>", line 1
    0~print("hello, world")
         ^
         SyntaxError: invalid syntax
>>>
>>> a = 3
>>> b = 9
>>> print(a+b)
12
>>> 1~
File "<stdin>", line 1
   1~
        ^
SyntaxError: invalid syntax
>>>

It works for me in ipython console. But it sends redundant Carriage Returns in other environments.