Fix cabal build. (#4)

- Remove cmark-gfm direct dependency.
- Fix submodule paths.
- Pin to versioned fused-effects packages.

Author: Patrick Thomson

.gitmodules

@@ -7,3 +7,9 @@
 [submodule "vendor/freer-cofreer"]
 	path = vendor/freer-cofreer
 	url = https://github.com/robrix/freer-cofreer.git
+[submodule "vendor/proto3-suite"]
+	path = vendor/proto3-suite
+	url = https://github.com/joshvera/proto3-suite.git
+[submodule "vendor/proto3-wire"]
+	path = vendor/proto3-wire
+	url = https://github.com/joshvera/proto3-wire.git

semantic.cabal

@@ -52,8 +52,8 @@ common dependencies
                      , fastsum
                      , filepath ^>= 1.4.2.1
                      , free ^>= 5.1
-                     , fused-effects
-                     , fused-effects-exceptions
+                     , fused-effects ^>= 0.4.0.0
+                     , fused-effects-exceptions ^>= 0.1.1.0
                      , hashable ^>= 1.2.7.0
                      , haskell-tree-sitter
                      , machines ^>= 0.6.4