Laravel 5.8 compatibility (carbon 1.x vs 2.x)

[ckissi]

Can you please make it compatible with Laravel 5.8.

- Conclusion: don't install nesbot/carbon 2.14.2
- consoletvs/invoices 1.1.0 requires nesbot/carbon ^1.22 -> satisfiable by nesbot/carbon[1.22.0, 1.22.1, 1.23.0, 1.24.0, 1.24.1, 1.24.2, 1.25.0, 1.26.0, 1.26.1, 1.26.2, 1.26.3, 1.26.4, 1.27.0, 1.28.0, 1.29.0, 1.29.1, 1.29.2, 1.30.0, 1.31.0, 1.31.1, 1.32.0, 1.33.0, 1.34.0, 1.34.1, 1.34.2, 1.34.3, 1.34.4, 1.35.0, 1.35.1, 1.36.0, 1.36.1, 1.36.2].