v1.20.0

commits since v1.19.0.txt

Previous deployment on 4/10/2024 included the upgrade to Django 4.2

Changes since last deployment

• Added supplier number field to claimant model, made available to edit in admin interface and view in fellow profile (issue #775)
• Added information about purchase orders to funcding request form (issue #758)
• Removed the ability to delete funding requests, expense claims, and blog posts (issue #763)