v0.7 Release - 12x12 Calendar support and calendar events

What's Changed

• Add 12x12 square page size (#54) by @Joe-Ortiz in #62
• Add unit tests for the 12x12 square page size by @Joe-Ortiz in #65
• Increase unit test coverage (#56) by @Joe-Ortiz in #63
• Add calendar events with colors & repetition (#29) by @Joe-Ortiz in #64

Full Changelog: v0.6.2...v0.7