You might want to build Continuum yourself for one of two reasons:
Note that you don't need to build Continuum for day to day use. While we encourage getting involved and fixing bugs that you find, for day to day use we recommend using the latest release.
All of the source code for Continuum and its related libraries is in a Subversion repository. You can also browse the repository, or checkout specific modules directly.
All SVN instructions are available on the Source Repository page.
To build Continuum, you run this command from the top (trunk) directory:
mvn clean install