The Conroy & Conroy Subroutine Library (2021.3 edition)

Subroutine_Library_Version
What: integer constant
File: _Types
Layer: 0
Platforms: C, C++, C#, Javascript, Pascal (All), PHP, Python

This defines the current version of the Subroutine Library. It is of the form:
vvvve
where "vvvv" is the version (e.g. 2020), and e is the edition (e.g. 0). Thus 20210 would indicate the first version of the year 2021.