Count occurrences of flags (was "Add .count type for flags") (#96)

Breaking change: parseEx now counts the number of occurrences of flag
parameters (those with takes_value == .none) and returns the count as a
u8.  Users of the library will need to change

    if (arg_result.my_flag)

to

    if (arg_result.my_flag != 0)

5 files changed, 5 insertions, 4 deletions

diff --git a/example/README.md.template b/example/README.md.template
index 696c598..34bff56 100644
--- a/example/README.md.template
+++ b/example/README.md.template
@@ -14,6 +14,7 @@ in the release notes.
 
 * Short arguments `-a`
   * Chaining `-abc` where `a` and `b` does not take values.
+  * Multiple specifications are tallied (e.g. `-v -v`).
 * Long arguments `--long`
 * Supports both passing values using spacing and `=` (`-a 100`, `-a=100`)
   * Short args also support passing values with no spacing or `=` (`-a100`)
diff --git a/example/help.zig b/example/help.zig
index dd9c9ea..e83ae44 100644
--- a/example/help.zig
+++ b/example/help.zig
@@ -15,6 +15,6 @@ pub fn main() !void {
     // where `Id` has a `describtion` and `value` method (`Param(Help)` is one such parameter).
     // The last argument contains options as to how `help` should print those parameters. Using
     // `.{}` means the default options.
-    if (res.args.help)
+    if (res.args.help != 0)
         return clap.help(std.io.getStdErr().writer(), clap.Help, &params, .{});
 }
diff --git a/example/simple-ex.zig b/example/simple-ex.zig
index fb20d07..dd5d929 100644
--- a/example/simple-ex.zig
+++ b/example/simple-ex.zig
@@ -36,7 +36,7 @@ pub fn main() !void {
     };
     defer res.deinit();
 
-    if (res.args.help)
+    if (res.args.help != 0)
         debug.print("--help\n", .{});
     if (res.args.number) |n|
         debug.print("--number = {}\n", .{n});
diff --git a/example/simple.zig b/example/simple.zig
index 2d32463..429f095 100644
--- a/example/simple.zig
+++ b/example/simple.zig
@@ -28,7 +28,7 @@ pub fn main() !void {
     };
     defer res.deinit();
 
-    if (res.args.help)
+    if (res.args.help != 0)
         debug.print("--help\n", .{});
     if (res.args.number) |n|
         debug.print("--number = {}\n", .{n});
diff --git a/example/usage.zig b/example/usage.zig
index 0d21352..333536b 100644
--- a/example/usage.zig
+++ b/example/usage.zig
@@ -14,6 +14,6 @@ pub fn main() !void {
 
     // `clap.usage` is a function that can print a simple help message. It can print any `Param`
     // where `Id` has a `value` method (`Param(Help)` is one such parameter).
-    if (res.args.help)
+    if (res.args.help != 0)
         return clap.usage(std.io.getStdErr().writer(), clap.Help, &params);
 }