v0.5.0-rc.4

[0.5.0-rc.4] Adjusted Delay Time and Support for Hidden Terms (#29)

* feat: change login backoff time from sec -> min

* fix: hidden terms aren't being recognized by scraper

* feat: add constant delay for initial login after failure
- also updated version to rc.4

* feat: add extra delays between requests

* chore: update scraper dependencies