Enhancements:
-------------

* Further develop and update files.json #1501
* New command line option: ``--output-folder`` allows moving artifact after build (to facilitate CI) #1538
* support globs in `ignore_prefix_files`, `has_prefix_files`, `always_include_files`, `binary_has_prefix_files` #1554
* decouple `ignore_prefix_files` from `binary_relocation`; make `binary_relocation` also accept a list of files or globs #1555

Bug fixes:
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* rename `short_path` key in files.json to `path` #1501
* allow `!` in package version (used in epoch) #1542
* don't compute SHA256 for folders #1544
* fix merge check for dst starting with src #1546
* use normpath when comparing utils.relative (fixes git clone issue) #1547
* disallow softlinks for conda (>=v.4.2) in conda-build created environments #1548