Sprig
Useful template functions for Go templates
...In its v0.3.9 release, there was a behavior change that impacts merging template functions in sprig. It is currently recommended to use v0.3.10 or later of that package. Using v0.3.9 will cause sprig tests to fail. v3 is currently stable release series on the master branch. The Go API should remain compatible with v2, the current stable version. Behavior change behind some functions is the reason for the new major version. By convention, all functions are lowercase. This seems to follow the Go idiom for template functions (as opposed to template methods, which are TitleCase).