chore: set max SDK version to <3.0.0 (#45)

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a2a4c44..d4bfa07 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.9.3
+
+* Set max SDK version to `<3.0.0`.
+
 ## 1.9.2
 
 * Fix Dart 2.0 runtime cast failure in test.

analysis_options.yaml

diff --git a/analysis_options.yaml b/analysis_options.yaml
deleted file mode 100644
index a10d4c5..0000000
--- a/analysis_options.yaml
+++ /dev/null
@@ -1,2 +0,0 @@
-analyzer:
-  strong-mode: true

pubspec.yaml

diff --git a/pubspec.yaml b/pubspec.yaml
index 3824d64..6774615 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -7,14 +7,17 @@
 #
 # When the major version is upgraded, you *must* update that version constraint
 # in pub to stay in sync with this.
-version: 1.9.2
-author: "Dart Team <misc@dartlang.org>"
-homepage: https://github.com/dart-lang/stack_trace
+version: 1.9.3
+
 description: A package for manipulating stack traces and printing them readably.
+author: 'Dart Team <misc@dartlang.org>'
+homepage: https://github.com/dart-lang/stack_trace
+
+environment:
+  sdk: '>=1.23.0 <3.0.0'
+
 dependencies:
-  path: "^1.2.0"
+  path: ^1.2.0
 
 dev_dependencies:
-  test: '^0.12.17'
-environment:
-  sdk: ">=1.23.0 <2.0.0"
+  test: '>=0.12.17 <2.0.0'