reticulate 1.45.0

New features

• Positron now supports F1 help for reticulate Python objects (#1866).

• Reticulate now supports pandas 3.0 (#1874, #1875).

• py_require() now allows action = "add" for already-required packages
  after Python initialization, while still erroring on true version conflicts
  (@JBGruber, #1872, #1878).

• py_to_r() now converts direct pandas categorical objects (for example,
  pd$Categorical(...)) for pandas 2.x and 3.x (#1883).

Minor improvements and fixes

• Positron now handles reticulate-backed UI actions, such as restarting or
  creating a new session, more reliably (#1869, #1871).

• Reticulate now avoids spurious Error: ignoring SIGPIPE signal messages on
  Unix when embedded Python writes to a closed pipe (#1868).

• Reticulate no longer triggers a CRAN NOTE on R-devel (4.6) for relative
  vignette URLs (#1882).

• virtualenv_starter() now excludes free-threaded CPython builds,
  which are not supported by reticulate (#1883).