Add missing reference papers
Set random state in fit rather than __init__
Add specific exception description for ValueError
Change indentation of multiline if-statement
Remove unused variable
Use term callable instead of function in doc string
Add more precise description of is_*_valid parameters
Combine nested if-statements
Remove default perceptron base estimator for integer data type
Add support for sparse feature vectors
Fix indentation of multi-line if-statement
Remove trailing empty line after doc strings
Add test case for sparse feature matrix
Fix flake warnings
Add test case for case without specified estimator
Add test case for min_n_samples parameter
Fix description of default base estimator behavior and add corresponding test case
Add description of RANSAC to linear-model docs
Move ransac example to linear-model folder
Add meta-data title, author and year to references