Metaboverse/Metaboverse: Metaboverse-v0.6.0

Major New database integration: First supported release with the ability to overlay data on BiGG and BioModels network models and enable reaction pattern searching across a wider array of organisms. Note: Network models from these sources can be less uniform as Reactome sources, so users should exercise some caution when using these capabilities and perform some sanity checks (see issue #73). kNN visualization improved to allow for more stable NN building without error (see commit 2395cd6). Neighbors dictionary backend curation is simplified and sped up (see commit 355abd4). Improved security policies. Specifically, external websites are opened in an isolated browser window and explicitly are context isolated and unable to access node integration. Enabled GitHub and Reactome URLs (connect-src) are more specific (see commit 96b1c9f). Minor Progress bar during network build now update with more incremental steps for longer processes (see issue #77). New variables for more unified backend processing. Metaboverse v0.6.0 and later will not be compatible with files curated using Metaboverse v0.5.0b or earlier