Update TOC (#184)

* misc

* add quantecon package to install

---------

Co-authored-by: mmcky <mamckay@gmail.com>

Author: jstac

lectures/_toc.yml

@@ -5,33 +5,26 @@ parts:
   numbered: true
   chapters:
   - file: about
-- caption: Supply and Demand
-  numbered: true
-  chapters:
-  - file: intro_supply_demand
-  - file: supply_demand_multiple_goods
-  - file: supply_demand_heterogeneity
-  - file: input_output
-- caption: Data and Measurement
+- caption: Economic Data 
   numbered: true
   chapters:
   - file: long_run_growth
   - file: business_cycle
-  - file: inflation_unemployment
   - file: inequality
-  - file: heavy_tails
-- caption: Useful Tools
+- caption: Essential Tools
   numbered: true
   chapters:
-  - file: geom_series
-  - file: prob_dist
   - file: linear_equations
   - file: eigen_I
-- caption: Simulation
+  - file: intro_supply_demand
+  - file: geom_series
+- caption: Probability and Distributions
   numbered: true
   chapters:
+  - file: prob_dist
   - file: lln_clt
   - file: monte_carlo
+  - file: heavy_tails
   - file: schelling
 - caption: Dynamics
   numbered: true
@@ -43,27 +36,26 @@ parts:
   - file: markov_chains_I
   - file: markov_chains_II
   - file: commod_price
-- caption: Modeling in Higher Dimensions
-  numbered: true
-  chapters:
-  - file: eigen_II
-  - file: lake_model
-  - file: asset_pricing
-  - file: networks
-  - file: samuelson
 - caption: Optimization
   numbered: true
   chapters:
   - file: lp_intro
   - file: comparative_adv
   - file: nonlinear
   - file: short_path
+- caption: Modeling in Higher Dimensions
+  numbered: true
+  chapters:
+  - file: eigen_II
+  - file: input_output
+  - file: lake_model
+  - file: asset_pricing
+  - file: networks
 - caption: Markets and Competitive Equilibrium
   numbered: true
   chapters:
-  - file: markets_welfare
-  - file: risk
-  - file: uncertainty
+  - file: supply_demand_multiple_goods
+  - file: supply_demand_heterogeneity
 - caption: Estimation
   numbered: true
   chapters:

lectures/eigen_II.md

@@ -27,7 +27,7 @@ In addition to what's in Anaconda, this lecture will need the following librarie
 ```{code-cell} ipython3
 :tags: [hide-output]
 
-!pip install graphviz
+!pip install graphviz quantecon
 ```
 
 ```{admonition} graphviz