update changelog

CHANGELOG.md

 # Changelog
 
+## [0.11.0] - 2021-01-25
+
+- ability to manually select trend type
+- ability to set plot font size (thanks Patrick Thomas)
+- ability to set black-on-white style during operation (thanks Patrick
+  Thomas)
+
+
+## [0.10.1] - 2020-12-22
+
+- fix indicator of missing data
+
+
+## [0.10.0] - 2020-12-22
+
+- separate crosshair tab, with position readback
+- set limits on time axis
+
+
 ## [0.9.0] - 2020-12-10
 
 - online second trends