v0.13.0

Changelog

• 95d9565 Bump Flet version 0.13.0
• eb5c29c Dismissible Control (#2124)
• 514abdb time_picker_entry_mode typo
• 04c9bb4 Time picker control (#2129)
• 2c8be84 output strings correctly (#2122)
• e2abac0 verify value limits (#2121)
• 3b829ae add thumb_icon to Switch (#2116)
• 7f89312 Feature: TextField Input validation (#2101)
• 4815439 update CONTRIBUTING.md (#2104)