Adds some dev tools and separates out dev requirements.txt

.flake8

@@ -0,0 +1,5 @@
+[flake8]
+# Recommended settings from black
+max-line-length = 80
+extend-select = B950
+extend-ignore = E203,E501,E701

.isort.cfg

@@ -0,0 +1,2 @@
+[settings]
+profile=black

.pre-commit-config.yaml

@@ -0,0 +1,25 @@
+exclude: "projects/"
+default_language_version:
+    python: python3.12
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: check-yaml
+      - id: check-json
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+      - id: requirements-txt-fixer
+      - id: detect-private-key
+      - id: name-tests-test
+        args: ["--pytest-test-first"]
+      - id: check-added-large-files
+  - repo: https://github.com/pycqa/isort
+    rev: 5.13.2
+    hooks:
+      - id: isort
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    # Using this mirror lets us use mypyc-compiled black, which is about 2x faster
+    rev: 24.10.0
+    hooks:
+      - id: black

README.md

@@ -52,4 +52,10 @@ The idea of gtnh-flow is to automatically do all the machine balancing math for
 + Sometimes the balancing algorithm will fail. This is explained in more detail in ## It's still beta. You may need to manually make adjustments to some shared ingredients to separate them from other machines. The easiest way to do this is is by renaming the ingredient slightly, like `chlorine 1` and `chlorine 2`. This will cause it to no longer automatically be used in any machine that needs chlorine, just the one you want. You can see this technique used regularly for platline.
 
 ## It's still beta
-`gtnh-flow` cannot solve certain parallel edge product situations - this is hopefully being resolved in version 2, which is currently in pre-alpha development. It will take a while as I am trying to avoid the way Factorio solvers work, which is to define an "objective" value for every item in the game. This is impractical to do and permanently maintain for GTNH.
+`gtnh-flow` cannot solve certain parallel edge product situations - this is hopefully being resolved in version 2, which is currently in pre-alpha development. It will take a while as I am trying to avoid the way Factorio solvers work, which is to define an "objective" value for every item in the game. This is impractical to do and permanently maintain for GTNH.
+
+## Development
+
+1. Create a virtualenv and activate it
+2. Run `pip install -r requirements_dev.txt`
+3. Run `pre-commit install`

requirements.txt

@@ -1,6 +1,5 @@
-graphviz>=0.17
-pytest>=6.2.5
+graphviz>=0.20
+pyreadline3>=3.5
 pyyaml>=6.0
-pyreadline3>=3.4.1
-sympy>=1.11.1
-termcolor>=1.1.0
+sympy>=1.13
+termcolor>=2.5

requirements_dev.txt

@@ -0,0 +1,8 @@
+black>=24.8
+coverage>=7.6
+flake8>=7.1
+isort>=5.13
+mypy>=1.11
+pre-commit>=3.8
+pytest>=8.3
+pytest-check>=2.4