v5.6.0

Bug Fixes

• core: update github username validation to align with Github validation rules (26b0e6f), closes #144
• jest: correct gulp's test tasks stopping inclusive sequences when using jest (1200ea7)

Features

• demo: update demo app to Angular CLI 1.6.8, bootstrap 4.0.0 and ng-bootstrap 1.0.0 (4e45707)
• doc: add a 'Troubleshooting' section to documentation (21d3ea3)
• umd: fix external libraries being bundled with main UMD file and improve related docs (f25e037)