3.0.0: PHP 7.4+, drop XP <= 9

• Dropped PHP 7.0 - 7.3, see xp-framework/rfc#343 - @thekid
• Dropped support for XP <= 9 , see xp-framework/rfc#341 - @thekid

2.3.0: XP 12 compatibility

• Made compatible with XP 12 - @thekid

2.2.0: URI base

• Merged PR #8: Add util.URI::base() method. For opaque URIs, this is
  the scheme and the path; for hierarchical URIs, this is the scheme and
  authority; for relative URIs, an exception is raised.
  (@thekid)

2.1.4: XP11 compatibility

• Made library compatible with XP 11 - @thekid

2.1.3: Unicode path, query and fragment fix

• Fixed issue #6: Invalid characters: new URI('http://example/über')
  now yields /%C3%BCber as path and is consistent with the JavaScript
  URL class in doing so. Also applies for query string and fragment.
  (@thekid)

2.1.2: PHP 8.1 compatibility

• Fixed PHP 8.1 warnings for IteratorAggregate interface compatibility
  (@thekid)

2.1.1: Absolute URIs fix

• Fixed URIs beginning with /:p:/ being treated as absolute - @thekid

2.1.0: Relative URI handling

• Canonicalized path when resolving against relative URIs - @thekid
• Fixed resolving relative URIs against URIs including files - @thekid

2.0.1: PHP 8.1 compatibility

• Fixed issue #5: PHP 8.1 warnings - @thekid

2.0.0: Drop PHP 5 support

• Implemented xp-framework/rfc#334: Drop PHP 5.6:
  . Rewrite isset(X) ? X : default to X ?? default
  . Use yield from
  . Group use statements
  (@thekid)