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# SciPy 0.19.1 Release Notes

SciPy 0.19.1 is a bug-fix release with no new features compared to 0.19.0. The most important change is a fix for a severe memory leak in `integrate.quad`.

## Authors

- Evgeni Burovski

- Patrick Callier +

- Yu Feng

- Ralf Gommers

- Ilhan Polat

- Eric Quintero

- Scott Sievert

- Pauli Virtanen

- Warren Weckesser

A total of 9 people contributed to this release. People with a “+” by their names contributed a patch for the first time. This list of names is automatically generated, and may not be fully complete.

### Issues closed for 0.19.1

- #7214: Memory use in integrate.quad in scipy-0.19.0

- #7258: `linalg.matrix_balance` gives wrong transformation matrix

- #7262: Segfault in daily testing

- #7273: `scipy.interpolate._bspl.evaluate_spline` gets wrong type

- #7335: scipy.signal.dlti(A,B,C,D).freqresp() fails

### Pull requests for 0.19.1

- #7211: BUG: convolve may yield inconsistent dtypes with method changed

- #7216: BUG: integrate: fix refcounting bug in quad()

- #7229: MAINT: special: Rewrite a test of wrightomega

- #7261: FIX: Corrected the transformation matrix permutation

- #7265: BUG: Fix broken axis handling in spectral functions

- #7266: FIX 7262: ckdtree crashes in query_knn.

- #7279: Upcast half- and single-precision floats to doubles in BSpline…

- #7336: BUG: Fix signal.dfreqresp for StateSpace systems

- #7419: Fix several issues in `sparse.load_npz`, `save_npz`

- #7420: BUG: stats: allow integers as kappa4 shape parameters