update changelog

Author: Datseris

CHANGELOG.md

@@ -1,10 +1,11 @@
-# v0.5.0:
+# v0.4.5:
 * Major bugfix in the `lyapunov` function where the time averaging was actually
   not happening correctly for discrete systems, resulting in slight inaccuracy.
 * Added option to choose whether you want the convergence timeseries for `lyapunov`,
   for both discrete and continuous systems.
 * Added option to supply your own functions to rescale and initialize the test
-  state in `lyapunov`.
+  state in `lyapunov` for both continuous and discrete systems.
+* Bugfix related to `estimate_delay`.
 
 # v0.4.0:
 * Increased speed of Standard Map system (by using `while` instead of `mod`).