Document backend loading

Refactor use of backend as more module-like

Refactor backend version check

Check backend version to avoid potential errors

Bump backend version

Refactor backend loading

Print helpful error message if user needs to update

Warn user about using `update=True`

Bump PySR version to 0.11.4 with new `update` behavior

Don't update Julia packages by default

Bump PySR version with new backend

Assert variable names are alphanumeric

Patch version 0.11.2

Patch version 0.11.1-1

Add missing `using Pkg`

Patch version to 0.11.1

Make sure that full `os.environ` is passed to subprocess

Add missing `Pkg` import before `PackageSpec`

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Re-activate env if julia already initialized

Avoid processing julia project twice

Allow custom shared julia project

Formally deprecate Julia <1.6 (#194)

Undo change to parsimony

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Set default parsimony to 0.0

Configure new backend version

Bump version with from_file fix

Fix `from_file` when loading pkl + csv from subdir

Bump version with Julia 1.6 fix

Correct function name with internal naming scheme

Correct function name

Clean up internal function names

Use subprocess to find Julia env dir for <=1.6

Ensure that the JuliaInfo is reset after install

Only check PyCall at init, not before install

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Fix version check

Fix version check for io_arg

Only set shared env JULIA_PROJECT for julia 1.7+

Update documentation links

Only print conflicting library warning if Julia not initialized

Bump version with torch warning

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Add warning message in case a user import torch

Fix formatting style issues

Fix typo

Convert Path to string before setting os.environ["JULIA_PROJECT"]

Set JULIA_PROJECT before loading pyjulia

Install SymbolicRegressions.jl and ClusterManagers.jl in a single step