Squirrel version(s)
Squirrel.Windows 2.0.1

Description
I am using electron-forge, which uses electron-winstaller which uses Squirrel.Windows 2.0.1, to try to build delta nupkg. My app version string follows the semver standard like 2.0.0-rc.2, with dot separated prerelease identifiers. It throws exception in SyncRelease. This is because the regex in

does not correctly capture the version string. It does not account for the "." character in the prerelease part, let alone the "+" character for the build metadata part.

Steps to recreate

1. SyncRelease with a version string 2.0.0-rc.1 in the file name inside RELESAES file

Expected behavior
version string should be "2.0.0-rc.2"

Actual behavior
version string become "2"

Additional information
Why don't use the suggested regex from semver?
https://semver.org/spec/v2.0.0.html#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string