Version 0.13.0

What's Changed

• feat: add Ensembl-VEP and VCF2MAF for cBio workflows by @davidlougheed in #31
• chore: update dependencies + base img by @davidlougheed in #70
• feat!: require persistent data dir + persist file artifacts from workflows by @davidlougheed in #71
• fix: missing WOMtool in prod docker img by @davidlougheed in #72
• chore: add VEP to dev img + update base img by @davidlougheed in #73

Full Changelog: v0.12.8...v0.13.0