v1.15.0

Changes:

• Fix rt.accum_ratiop
• Docs: Fixes validations for methods in Date class
• Testing: treat DeprecationWarning and FutureWarning as errors
• Docs: Struct validation fixes
• Docs: DateTimeNano validation (part 1)
• Docs: DateTimeNano validation (part 2)
• Remove invalid \s from docstring
• New conda index no longer recognizes --no-progress
• Docs: Struct validation (part 2)
• rt_fastarray: allow large_string in from_arrow
• Fix DateTimeNano.info() to show offset correctly.
• Docs: Rewrites DateTimeNano methods (part 1)
• Switch to using conda-index instead of conda-build index
• Docs: rt_sds.save_sds() docstring
• Promote Date value to int to avoid overflow in repr
• Use conda_index module directly
• change some type hints
• Pin to riptide_cpp-1.17.0
• Remove local_scheme for setuptools_scm
• Pin to released rc-1.17.0