Bump dependencies (#4)

* Upgrade and properly specify dependencies.

* Bump crate version.

Author: lseelenbinder

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pbf_font_tools"
-version = "1.0.1"
+version = "1.0.2"
 authors = ["Ian Wagner <ian@stadiamaps.com>"]
 license = "BSD-3-Clause"
 repository = "https://github.com/stadiamaps/pbf_font_tools"
@@ -14,25 +14,25 @@ edition = "2018"
 freetype = ["freetype-rs", "sdf_glyph_renderer/freetype"]
 
 [dependencies]
-futures = "~0.3"
-protobuf = "~2.20"
+futures = "0.3.14"
+protobuf = "2.22.1"
 
 [dependencies.tokio]
-version = "~1.0"
+version = "1.5.0"
 features = ["fs", "io-util"]
 
 [build-dependencies]
-glob = "~0.3"
-protobuf-codegen-pure = "~2.20"
+glob = "0.3.0"
+protobuf-codegen-pure = "2.22.1"
 
 [dev-dependencies.tokio]
-version = "~1.0"
+version = "1.5.0"
 features = ["fs", "io-util", "macros", "rt"]
 
 [dependencies.freetype-rs]
-version = "~0.26"
+version = "0.27.0"
 optional = true
 
 [dependencies.sdf_glyph_renderer]
-version = "~0.1"
+version = "0.1.3"
 optional = true