If you are wondering what convention you should use for versioning your code. Have a look at Semantic Versioning. In essence, given a version number MAJOR.MINOR.PATCH, increment the:
MAJOR version when you make incompatible API changes, MINOR version when you add functionality in a backwards-compatible manner, and PATCH version when you make backwards-compatible bug fixes. Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format.
This video explains the convention beautifully.
Last modified: 2019-04-01