Switch to python3 and scipy from slycot
Turns out we need python3 matplotlib to make scipy work well enough to
place the poles correctly for our systems. Rather than do it piecemeal,
do it all at once.
This includes a python opencv upgrade too to support the new python, and
a matplotlib upgrade.
Change-Id: Ic7517b5ebbfdca9cc90ae6a61d86b474f2f21b29
diff --git a/y2019/control_loops/python/drivetrain.py b/y2019/control_loops/python/drivetrain.py
index 0a1a90d..9c4db49 100644
--- a/y2019/control_loops/python/drivetrain.py
+++ b/y2019/control_loops/python/drivetrain.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
from __future__ import print_function
from frc971.control_loops.python import drivetrain
diff --git a/y2019/control_loops/python/elevator.py b/y2019/control_loops/python/elevator.py
index 0a4e208..b7fc74b 100755
--- a/y2019/control_loops/python/elevator.py
+++ b/y2019/control_loops/python/elevator.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
from frc971.control_loops.python import control_loop
from frc971.control_loops.python import linear_system
diff --git a/y2019/control_loops/python/intake.py b/y2019/control_loops/python/intake.py
index 9f4f488..828f54e 100755
--- a/y2019/control_loops/python/intake.py
+++ b/y2019/control_loops/python/intake.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
from aos.util.trapezoid_profile import TrapezoidProfile
from frc971.control_loops.python import control_loop
diff --git a/y2019/control_loops/python/polydrivetrain.py b/y2019/control_loops/python/polydrivetrain.py
index fe52859..eaccb92 100644
--- a/y2019/control_loops/python/polydrivetrain.py
+++ b/y2019/control_loops/python/polydrivetrain.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
import sys
from y2019.control_loops.python import drivetrain
diff --git a/y2019/control_loops/python/stilts.py b/y2019/control_loops/python/stilts.py
index 2c4644d..c2bbe68 100755
--- a/y2019/control_loops/python/stilts.py
+++ b/y2019/control_loops/python/stilts.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
from frc971.control_loops.python import control_loop
from frc971.control_loops.python import linear_system
diff --git a/y2019/control_loops/python/wrist.py b/y2019/control_loops/python/wrist.py
index 127def7..c983a1d 100755
--- a/y2019/control_loops/python/wrist.py
+++ b/y2019/control_loops/python/wrist.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
from aos.util.trapezoid_profile import TrapezoidProfile
from frc971.control_loops.python import control_loop