Merge pull request kirbs-#66 from kirbs-/dev

Added license to wheel.

Merge pull request kirbs-#60 from kirbs-/dev

0.5.1 Release
Resolves kirbs-#54, kirbs-#58 and  kirbs-#50.

Fixed toolbar buttons showing help text.

Added notebook >= 5.1 and nbconvert >=5.0 dependency.
Updated README.

Merge pull request kirbs-#35 from kirbs-/dev

0.4.0 Release

Updated hide_code with new path helpers.

Updated README.

Merge pull request kirbs-#15 from kirbs-/dev

0.2.0 Release

Updated READMEs and setup.py metadata.

Updated READMEs and setup.py metadata.

Merge pull request kirbs-#13 from kirbs-/dev

Resolving Issues kirbs-#11 and kirbs-#12