RENEE 2.5.12

• Minor documentation improvements. (#100, @kelly-sovacool)
• Fix RNA report bug, caused by hard-coding of PC1-3, when only PC1-2 were generated. (#104, @slsevilla)
• Allow printing the version or help message even if singularity is not in the path. (#110, @kelly-sovacool)
• Fix RSeQC environments:
  • Set RSeQC envmodule version to 4.0.0, which synchronizes it with the version in the docker container used by singularity. (#122, @kelly-sovacool)
  • Update docker with RSeQC's tools properly added to the path. (#123, @kelly-sovacool)