pyenv 2.0.0-rc1

Release 2.0.0

• Support for CPython 3.9.5 has been added.
• Support for CPython 3.8.10 has been added.
• Support for CPython 3.10.0b1 has been added.
• Support for GraalPython 21.1.0 has been added.
• Support for Anaconda 2021.05 has been added.
• Support for Miniforge3 4.10.1-1 has been added.
• CPython 3.10-dev target branch renamed.
• CPython 3.10-dev and 3.11-dev updated.
• Bump OpenSSL to 1.1.1x for all Pythons that support MacOS 11
• Update generated configuration files before run ./configure
• Full shell configuration instructions placed into pyenv init
• Prevent build from installing MacOS apps globally
• ldflags_dirs is not needed for Python and causes failures

Breaking changes

• Split startup logic into PATH and everything else (#1649 (comment))