Release v1.1.0

• Add exercise categories
• Mark workouts on calendar
• Add delete functionality for full exercise in TrainingDay screen
• Improve selection & drag-n-drop system (TrainingDay screen)
• Add History tab when viewing exercise sets
• Improve back button functionality when viewing exercise sets
• Smoother sliding view for TrainingDay screen
• Add 1RM calculator
• Add Wilks and Dots coefficient calculator
• Allow selection and modification of sets
• Fix some layout issues
• Various bug fixes