updated changelog

docs/content/misc/legolas_changelog.md

@@ -1,10 +1,21 @@
 ---
 title: Legolas history & changelog
 layout: single
+classes: wide
 sidebar:
   nav: "leftcontents"
-last_modified_at: 2020-10-27
+last_modified_at: 2020-11-30
 ---
 
+### [release 1.0.0](https://github.com/n-claes/legolas/releases/tag/v1.0.0)
+**What's new:**
+- CMake can now also link to ARPACK, SCALAPACK and MUMPS
+- Complete overhaul of the solver modules:
+  - Dedicated submodules for each solver
+  - Implemented a QZ-direct solver, which solves Ax = wBx in its general form
+- ARPACK-based solvers are implemented:
+  - Solves the standard or general eigenvalue problem for selected eigenvalues
+  - Includes a shift-invert method to probe specific spectral regions
+
 ### [version 0.9.0](https://github.com/n-claes/legolas/releases/tag/v0.9.0)
 - First public beta release