Release 2.1.25

[jsirois]

On the docket:

• Use symlinks to add dists in the Pex CLI. Use symlinks to add dists in the Pex CLI. #1185
• Support PEX files as resolve repositories. Support PEX files as resolve repositories. #1108
• Pex does not use the pip 2020-resolver when resolving for Python 2.7 Pex does not use the pip 2020-resolver when resolving for Python 2.7 #1179
• PexInfo.copy does not copy its collection attributes. PexInfo.copy does not copy its collection attributes. #1147
• Add support for PEX_INTERPRETER -c, -m and - special modes to PEX venvs. Add support for PEX_INTERPRETER -c, -m and - special modes to PEX venvs. #1136
• Requires-Python handling causes LegacyVersion warning Requires-Python handling causes LegacyVersion warning #1150
• Add option to extend PATH with additional console scripts Add option to extend PATH with additional console scripts #1097
• Removing "activation" time from PEX Removing "activation" time from PEX #1115
• Run PEXes as normal applications Run PEXes as normal applications #962
• Top level environment markers are lost in built PEXes. Top level environment markers are lost in built PEXes. #899
• Using --resolver-version=pip-2020-resolver yields poor dependency conflict information. Using --resolver-version=pip-2020-resolver yields poor dependency conflict information. #1159

[jsirois]

Broke off #1186 to take up the overflow items into 2.1.26 so 2.1.25 is ready for release tomorrow.