1.2.0

Features:

• #33 support interrupting the kernel.
• #35 isComplete implementation makes usage in console mode much easier. Code is only sent when it forms a complete statement much like in jshell and ipython.
• Support for update_display_data for creating animations and running multiple cells that interact with the same display.

Changes:

• update kernel installer to 2.0.0.
• update base kernel to 2.2.3.

Bug fixes:

• #36 timing out killed the kernel rather than interrupting it.
• #37 don't attempt to render diagnostics without an associated source position (was raising an index-out-of-bounds exception).
• #29 display unresolved dependencies when evaluating code with forward references that have no yet been declared.
• #31 stricter requirements for when a % is considered the start of a magic to avoid cases of accidental use.