Prepare for release: bump version, tighten dependency constraints (#482)

* bump version, tighten dependency constraints

* fix error caused by matplotlib API change

Author: till-m

examples/visualization.ipynb

@@ -140,7 +140,7 @@
     "    steps = len(optimizer.space)\n",
     "    fig.suptitle(\n",
     "        'Gaussian Process and Utility Function After {} Steps'.format(steps),\n",
-    "        fontdict={'size':30}\n",
+    "        fontsize=30\n",
     "    )\n",
     "    \n",
     "    gs = gridspec.GridSpec(2, 1, height_ratios=[3, 1]) \n",

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "bayesian-optimization"
-version = "1.4.3"
+version = "1.5.0"
 description = "Bayesian Optimization package"
 authors = ["Fernando Nogueira"]
 license = "MIT"
@@ -9,13 +9,12 @@ packages = [{include = "bayes_opt"}]
 
 [tool.poetry.dependencies]
 python = "^3.9"
-scikit-learn = ">=1.0.0"
-numpy = ">=1.9.0"
-scipy = ">=1.0.0"
+scikit-learn = "^1.0.0"
+numpy = "^1.9.0"
+scipy = "^1.0.0"
 colorama = "^0.4.6"
 
 
-
 [tool.poetry.group.dev]  # for testing/developing
 optional = true
 [tool.poetry.group.dev.dependencies]