Features:

• Support URI::File of Ruby 2.6 (@hsbt)

Bugfixes:

• Expand symlinks during setup to allow Bundler to load correctly when using symlinks in $GEM_HOME (#6465, @ojab, @indirect)
• Dont let Bundler create temporary folders for gem installs which are owned by root (#6258, @colby-swandale)
• Don't fallback to using temporary directories when needed directories already exist (#6546, @brodock)
• Use SharedHelpers.filesystem_access when reading a Gemfile so friendly error messages can be given to the user (#6541, @segiddins)
• Check if source responds to #remotes before printing gem install error message (#6211, @colby-swandale)
• Handle Errno::ENOTSUP in the Bundler Process Lock to prevent exceptions when using NFS mounts (#6566, @colby-swandale)
• Respect encodings when reading gemspecs (#6598, @deivid-rodriguez)

Documentation:

• Fix links between manual pages (@BanzaiMan)
• Add warning to Gemfile documentation for the use of the source option when declaring gems (#6280, @forestgagnon)