* Add wasp field to AppSpec.App
* Validate app.wasp.version in AppSpec.Valid
* Add app.wasp.version field on .wasp file generated by CreateNewProject
* Add app.wasp.version to .wasp files of e2e tests
* Add app.wasp.version to examples' .wasp files
* Add app.wasp.version to docs
* Change waspc version from 0.6.0.0 to 0.6.0
* Change app.wasp.version validation to use regular semver
* Format code
* Refactor app.wasp.version validation
* Refactor app.wasp.version validation
* Update supported app.wasp.version format in docs
* Add TODO to validateWaspVersion
* Refactor app.wasp.version using toEnum
* Create Wasp.Version module with waspVersion constant
* Fix parseWaspVersionRange regex
Fixed:
- The regex wasn't checking the string *starts* with ^.
- The . symbols were not escaped.
- The $ token is not specified as supported in the regex-tdfa docs.
\' is used instead.
* Add comment explaining wasp version validation restrictions
* Use Wasp.Version.waspVersion instead of Paths_wasp.version
