Add pub access modifier to publicly used struct fields (#200)

func/func.v

@@ -13,6 +13,7 @@ pub type VectorValuedFn = fn (x f64, y []f64, params []f64) f64
 
 // Definition of an arbitrary function with parameters
 pub struct Fn {
+pub:
 	f ArbitraryFn @[required]
 mut:
 	params []f64
@@ -46,6 +47,7 @@ pub fn (f Fn) safe_eval(x f64) !f64 {
 
 // Definition of an arbitrary function returning two values, r1, r2
 pub struct FnFdf {
+pub:
 	f   ?ArbitraryFn
 	df  ?DfFn
 	fdf ?FdfFn

iter/ranges.v

@@ -15,6 +15,7 @@ pub:
 
 @[params]
 pub struct IntIterParams {
+pub:
 	start i64
 	stop  i64 @[required]
 	step  i64 = 1
@@ -71,6 +72,7 @@ pub:
 
 @[params]
 pub struct FloatIterParams {
+pub:
 	start f64
 	stop  f64 @[required]
 	step  f64 = 1.0
@@ -126,6 +128,7 @@ pub:
 
 @[params]
 pub struct LinearIterParams {
+pub:
 	start    f64  @[required]
 	stop     f64  @[required]
 	len      i64  = 50

plot/show.v

@@ -12,6 +12,7 @@ import time
 @[params]
 pub struct PlotConfig {
 	net.ListenOptions
+pub:
 	timeout time.Duration = 1 * time.second
 	use_cdn bool
 	saddr   string = ':0'

roots/bisection.v

@@ -21,6 +21,7 @@ pub mut:
 // BisectionParams contains the parameters for the bisection method
 @[params]
 pub struct BisectionParams {
+pub:
 	xmin   f64
 	xmax   f64
 	epsrel f64 = 1e-6

util/util.v

@@ -11,6 +11,7 @@ pub fn arange(n int) []int {
 
 @[params]
 pub struct RangeStep {
+pub:
 	step int = 1
 }