v3.26.0

• Only rewrite checksum files in .task if the checksum has changed (#1185, #1194 by @deviantintegral).
• Added experiments documentation to the website (#1198 by @pd93).
• Deprecated version: 2 schema. This will be removed in the next major release (#1197, #1198, #1199 by @pd93).
• Added a new prompt: prop to set a warning prompt to be shown before running a potential dangurous task (#100, #1163 by @MaxCheetham, Documentation).
• Added support for single command task syntax. With this change, it's now possible to declare just cmd: in a task, avoiding the more complex cmds: [] when you have only a single command for that task (#1130, #1131 by @timdp).