+ Replace +ipython functionality with +python/open-ipython-repl command.
+ Use python-shell-interpreter for eval handlers, repl and python
version detection.
+ Removed various python-shell-* variables for ipython; they are already
supported upstream.
Caused my misuse of if-let* to let-bind dynamic variables. The expanded
code doesn't quite work out the way I expected, causing
python-shell-interpreter to be nil regardless of which side of the
if-else statement ran.
projectile-project-root no longer returns `default-directory` if not in
a project (it returns nil). As such, doom-project-* functions (and their
uses) have been refactored.
+ doom-project-p & doom-project-root are aliases for
projectile-project-p & projectile-project-root.
+ doom-project-{p,root,name,expand} now has a DIR argument (for
consistency, since projectile-project-name and
projectile-project-expand do not).
+ The nocache parameter is no longer necessary, as projectile's caching
behavior is now more sane.
+ Removed some projectile advice/hacks that are no longer necessary.
+ Updated unit tests
+ Add $PYENV_ROOT/shims was added to exec-path, so pyenv python version
is picked up on.
+ Fixes out-of-date python version in the modeline of other buffers
after switching pyenv/pyvenv/conda envs.
+ The pipenv version and regular python display have been merged.
`pipenv run ...` searches for a Pipfile itself, but doesn't search far
enough, creating a Pipfile in the current directory. Instead, we run the
command from the pipenv project root so it doesn't have to search.
+ Rewritten +conda support
+ Adds +pyenv and +pyvenv flags with support.
+ New +ipython flag to enable ipython REPL support
+ Added pipenv support. This is the new default, instead of pyenv, and
isn't hidden behind a module flag because it is officially endorsed by
python.
Addresses #736
