Version 1.2.0

This update contains minor additional functionality, bug fixes, and optimizations.

We thank all contributors: Jason Kaye, Hugo U. R. Strand, Nils Wentzell

A detailed list of changes is provided in the [ChangeLog](https://github.com/flatironinstitute/cppdlr/blob/1.2.x/doc/ChangeLog.md).

Version 1.1.1

cppdlr version 1.1.1 is a patch-release that includes cmake build system improvements, continuous integration improvements, and a backward compatibilty fix.

We thank all contributors: Hugo U.R. Strand, Nils Wentzell

A detailed list of changes is provided in the [ChangeLog](https://github.com/flatironinstitute/cppdlr/blob/1.1.x/doc/ChangeLog.md).

Version 1.1.0

This update to cppdlr adds significant new functionality, including

* Symmetrized DLR grids
* Imaginary time quadrature weighting for DLR frequency selection to ensure accuracy in L^2(tau) norm
* Various other minor features, including optimizations, bug fixes, and code simplifications

Please see the documentation for details on new features.

We thank all contributors: Thomas Hahn, Alexander Hampel, Jason Kaye, Henri Menke, Hugo U. R. Strand, Nils Wentzell.

A detailed list of changes is provided in the [ChangeLog](https://github.com/flatironinstitute/cppdlr/blob/1.1.x/doc/ChangeLog.md).

This is the initial release of cppdlr, a C++ library implementing the…

… discrete Lehmann representation of imaginary time Green's functions.

We thank all contributors: Thomas Hahn, Jason Kaye, Hugo U. R. Strand, Nils Wentzell