ENH: split linear dynamics into two parts

Author: mmcky

lectures/_toc.yml

@@ -17,16 +17,19 @@ parts:
   chapters:
   - file: complex_and_trig
   - file: linear_equations
-  - file: eigen_I
   - file: intro_supply_demand
-- caption: Linear Dynamics
+- caption: "Linear Dynamics: Finite Horizons"
   numbered: true
   chapters:
   - file: pv
   - file: cons_smooth
   - file: equalizing_difference
   - file: cagan_ree
   - file: cagan_adaptive
+- caption: "Linear Dynamics: Infinite Horizons"
+  numbered: true
+  chapters:
+  - file: eigen_I
   - file: geom_series
 - caption: Probability and Distributions
   numbered: true