diff --git a/0.3_roadmap.txt b/0.3_roadmap.txt
index 28d8b58e4d..aaf72e5b68 100644
--- a/0.3_roadmap.txt
+++ b/0.3_roadmap.txt
@@ -17,4 +17,5 @@
 - struct and interface embedding
 - vfmt: fix common errors automatically to save time (make vars mutable and vice versa, add missing imports etc)
 - method expressions with an explicit receiver as the first argument
+- fix all remaining generics issues (`foo(5)` instead of `foo<int>(5)` etc)
 
diff --git a/examples/hot_reload/bounce.v b/examples/hot_reload/bounce.v
index 98e2202fc2..b806b99c85 100644
--- a/examples/hot_reload/bounce.v
+++ b/examples/hot_reload/bounce.v
@@ -43,6 +43,7 @@ fn main() {
 		create_window: true
 		frame_fn: frame
 		bg_color: gx.white
+		font_path: gg.system_font_path()
 	})
 	// window.onkeydown(key_down)
 	println('Starting the game loop...')
@@ -56,6 +57,7 @@ fn main() {
 [live]
 fn frame (mut game Game) {
 	game.gg.begin()
+	game.gg.draw_text_def(10, 5, 'Modify examples/hot_reload/bounce.v to get instant updates')
 	game.gg.draw_rect(game.x, game.y, width, width, gx.blue)
 	game.gg.draw_rect(window_width - width - game.x + 10, 200 - game.y + width, width, width, gx.rgb(228, 10, 55))
 	game.gg.draw_rect(game.x - 25, 250 - game.y, width, width, gx.rgb(28, 240, 55))
diff --git a/vlib/builtin/array.v b/vlib/builtin/array.v
index c26e0a0c06..777fd9e766 100644
--- a/vlib/builtin/array.v
+++ b/vlib/builtin/array.v
@@ -607,6 +607,15 @@ pub fn (a []byte) index(v byte) int {
 	return -1
 }
 
+pub fn (a []rune) index(v rune) int {
+	for i in 0..a.len {
+		if a[i] == v {
+			return i
+		}
+	}
+	return -1
+}
+
 // []char.index returns the index of the first element equal to the given value,
 // or -1 if the value is not found in the array.
 // TODO is `char` type yet in the language?
diff --git a/vlib/builtin/byte_test.v b/vlib/builtin/byte_test.v
index 27357a44de..e108f2fba2 100644
--- a/vlib/builtin/byte_test.v
+++ b/vlib/builtin/byte_test.v
@@ -1,8 +1,19 @@
 fn test_clone() {
-	a := [byte(0), 1, 2] 
+	a := [byte(0), 1, 2]
 	b := a.clone()
 	assert b.len == 3
-	assert b[0] == 0 
-	assert b[1] == 1 
-	assert b[2] == 2 
-} 
+	assert b[0] == 0
+	assert b[1] == 1
+	assert b[2] == 2
+	println(b[1].str() )
+	println(typeof(`A`))
+	x := rune(`A`)
+	assert x.str() == 'A'
+	assert typeof(x) == 'rune'
+	//
+	y := `Z`
+	assert typeof(y) == 'rune'
+	assert y.str() == 'Z'
+	// assert b[1].str() == '1' TODO
+
+}
diff --git a/vlib/builtin/int.v b/vlib/builtin/int.v
index 2f87762814..2d717f41f1 100644
--- a/vlib/builtin/int.v
+++ b/vlib/builtin/int.v
@@ -368,80 +368,21 @@ pub fn (nn byteptr) str() string {
 	return u64(nn).hex()
 }
 
-// ----- utilities functions -----
-
-/*
-pub fn (c rune) str() string {
-	fst_byte := int(c)>>8 * 3 & 0xff
-	len := utf8_char_len(fst_byte)
-	mut str := string{
-		len: len
-		str: malloc(len + 1)
-	}
-	for i in 0..len {
-		str.str[i] = int(c)>>8 * (3 - i) & 0xff
-	}
-	str.str[len] = `\0`
-	return str
-}
-*/
-
-pub fn (c byte) str() string {
+pub fn (b byte) str() string {
+	// TODO
+	//return int(b).str_l(7)
 	mut str := string{
 		str: malloc(2)
 		len: 1
 	}
 	unsafe {
-		str.str[0] = c
+		str.str[0] = b
 		str.str[1] = `\0`
 	}
+	//println(str)
 	return str
 }
 
-/*
-type rune = int
-
-pub fn (r rune) str() string {
-	mut str := string{
-		str: malloc(2)
-		len: 1
-	}
-	unsafe {
-		str.str[0] = r
-		str.str[1] = `\0`
-	}
-
-	return str
-}
-*/
-
-pub fn (c byte) is_capital() bool {
-	return c >= `A` && c <= `Z`
-}
-
-pub fn (b []byte) clone() []byte {
-	mut res := []byte{len: b.len}
-	//mut res := make([]byte, {repeat:b.len})
-	for i in 0..b.len {
-		res[i] = b[i]
-	}
-	return res
-}
-
-// TODO remove this once runes are implemented
-pub fn (b []byte) bytestr() string {
-	return bytes2string(b)
-}
-
-// TODO copy pasted from builder.v
-fn bytes2string(b []byte) string {
-	mut copy := b.clone()
-	copy << `\0`
-	res := tos(copy.data, copy.len-1)
-	return res
-}
-
-
 // TODO generic
 pub fn (a []byte) contains(val byte) bool {
 	for aa in a {
diff --git a/vlib/builtin/rune.v b/vlib/builtin/rune.v
new file mode 100644
index 0000000000..a3272b232b
--- /dev/null
+++ b/vlib/builtin/rune.v
@@ -0,0 +1,54 @@
+// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
+module builtin
+
+type rune = int
+
+pub fn (c rune) str() string {
+	return utf32_to_str(u32(c))
+	/*
+	unsafe {
+		fst_byte := int(c)>>8 * 3 & 0xff
+		len := utf8_char_len(byte(fst_byte))
+		println('len=$len')
+		mut str := string{
+			len: len
+			str: malloc(len + 1)
+		}
+		for i in 0..len {
+			str.str[i] = byte(int(c)>>8 * (3 - i) & 0xff)
+		}
+		str.str[len] = `\0`
+		println(str)
+		return str
+	}
+	*/
+}
+
+// Define this on byte as well, so that we can do `s[0].is_capital()`
+pub fn (c byte) is_capital() bool {
+	return c >= `A` && c <= `Z`
+}
+
+pub fn (b []byte) clone() []byte {
+	mut res := []byte{len: b.len}
+	//mut res := make([]byte, {repeat:b.len})
+	for i in 0..b.len {
+		res[i] = b[i]
+	}
+	return res
+}
+
+// TODO remove this once runes are implemented
+pub fn (b []byte) bytestr() string {
+	return bytes2string(b)
+}
+
+// TODO copy pasted from builder.v
+fn bytes2string(b []byte) string {
+	mut copy := b.clone()
+	copy << `\0`
+	res := tos(copy.data, copy.len-1)
+	return res
+}
+
diff --git a/vlib/builtin/string_test.v b/vlib/builtin/string_test.v
index 552a689b80..fcdd26aaa8 100644
--- a/vlib/builtin/string_test.v
+++ b/vlib/builtin/string_test.v
@@ -504,7 +504,7 @@ fn test_bytes_to_string() {
 	}
 	assert unsafe { buf.vstring() } == 'hello'
 	assert unsafe { buf.vstring_with_len(2) } == 'he'
-	bytes := [`h`, `e`, `l`, `l`, `o`]
+	bytes := [byte(`h`), `e`, `l`, `l`, `o`]
 	assert bytes.bytestr() == 'hello'
 }
 
diff --git a/vlib/gg/text_rendering.v b/vlib/gg/text_rendering.v
index 873d6ad47a..ca97aa16ea 100644
--- a/vlib/gg/text_rendering.v
+++ b/vlib/gg/text_rendering.v
@@ -163,3 +163,31 @@ pub fn (ctx &Context) text_size(s string) (int, int) {
 	return int((buf[2] - buf[0]) / ctx.scale), int((buf[3] - buf[1]) / ctx.scale)
 }
 
+
+pub fn system_font_path() string {
+	env_font := os.getenv('VUI_FONT')
+	if env_font != '' && os.exists(env_font) {
+		return env_font
+	}
+	$if windows {
+		return 'C:\\Windows\\Fonts\\arial.ttf'
+	}
+	mut fonts := ['Ubuntu-R.ttf', 'Arial.ttf', 'LiberationSans-Regular.ttf', 'NotoSans-Regular.ttf',
+	'FreeSans.ttf', 'DejaVuSans.ttf']
+	$if macos {
+		return '/System/Library/Fonts/SFNS.ttf'
+		//fonts = ['SFNS.ttf', 'SFNSText.ttf']
+	}
+	s := os.exec('fc-list') or { panic('failed to fetch system fonts') }
+	system_fonts := s.output.split('\n')
+	for line in system_fonts {
+		for font in fonts {
+			if line.contains(font) && line.contains(':') {
+				res := line.all_before(':')
+				println('Using font $res')
+				return res
+			}
+		}
+	}
+	panic('failed to init the font')
+}
diff --git a/vlib/os/file.v b/vlib/os/file.v
index f6eaee91d3..28a5d23d52 100644
--- a/vlib/os/file.v
+++ b/vlib/os/file.v
@@ -72,7 +72,8 @@ pub fn (f &File) read_bytes(size int) []byte {
 
 // read_bytes_at reads an amount of bytes at the given position in the file
 pub fn (f &File) read_bytes_at(size, pos int) []byte {
-	mut arr := [`0`].repeat(size)
+	//mut arr := [`0`].repeat(size)
+	mut arr := []byte{ len:size }
 	C.fseek(f.cfile, pos, C.SEEK_SET)
 	nreadbytes := C.fread(arr.data, 1, size, f.cfile)
 	C.fseek(f.cfile, 0, C.SEEK_SET)
diff --git a/vlib/os/os.v b/vlib/os/os.v
index 48fadc32e7..4dcb94cfc9 100644
--- a/vlib/os/os.v
+++ b/vlib/os/os.v
@@ -16,7 +16,7 @@ pub fn read_bytes(path string) ?[]byte {
 	C.fseek(fp, 0, C.SEEK_END)
 	fsize := C.ftell(fp)
 	C.rewind(fp)
-	mut res := [`0`].repeat(fsize)
+	mut res := [byte(`0`)].repeat(fsize)
 	nr_read_elements := C.fread(res.data, fsize, 1, fp)
 	C.fclose(fp)
 	return res[0..nr_read_elements * fsize]
diff --git a/vlib/regex/regex.v b/vlib/regex/regex.v
index bc5e886dd7..c8afb7f388 100644
--- a/vlib/regex/regex.v
+++ b/vlib/regex/regex.v
@@ -207,7 +207,7 @@ pub fn (re RE) get_parse_error_string(err int) string {
 
 // utf8_str convert and utf8 sequence to a printable string
 [inline]
-fn utf8_str(ch u32) string {
+fn utf8_str(ch rune) string {
 	mut i := 4
 	mut res := ""
 	for i > 0 {
@@ -233,33 +233,33 @@ fn simple_log(txt string) {
 pub type FnValidator fn (byte) bool
 struct Token{
 mut:
-	ist u32 = u32(0)
+	ist rune
 
 	// char
-	ch u32                 = u32(0)  // char of the token if any
-	ch_len byte            = byte(0) // char len
+	ch rune   // char of the token if any
+	ch_len byte             // char len
 
 	// Quantifiers / branch
-	rep_min         int    = 0     // used also for jump next in the OR branch [no match] pc jump
-	rep_max         int    = 0     // used also for jump next in the OR branch [   match] pc jump
-	greedy          bool   = false // greedy quantifier flag
+	rep_min         int         // used also for jump next in the OR branch [no match] pc jump
+	rep_max         int         // used also for jump next in the OR branch [   match] pc jump
+	greedy          bool    // greedy quantifier flag
 
 	// Char class
 	cc_index        int    = -1
 
 	// counters for quantifier check (repetitions)
-	rep             int    = 0
+	rep             int
 
 	// validator function pointer
 	validator FnValidator
 
 	// groups variables
-	group_rep          int = 0     // repetition of the group
+	group_rep          int      // repetition of the group
 	group_id           int = -1    // id of the group
 	goto_pc            int = -1    // jump to this PC if is needed
 
 	// OR flag for the token
-	next_is_or bool        = false // true if the next token is an OR
+	next_is_or bool        // true if the next token is an OR
 }
 
 [inline]
@@ -380,7 +380,7 @@ Backslashes chars
 
 */
 struct BslsStruct {
-	ch u32                   // meta char
+	ch rune                   // meta char
 	validator FnValidator    // validator function pointer
 }
 
@@ -466,8 +466,8 @@ const(
 struct CharClass {
 mut:
 	cc_type int = cc_null      // type of cc token
-	ch0 u32     = u32(0)       // first char of the interval a-b  a in this case
-	ch1 u32     = u32(0)	   // second char of the interval a-b b in this case
+	ch0 rune       // first char of the interval a-b  a in this case
+	ch1 rune	   // second char of the interval a-b b in this case
 	validator FnValidator      // validator function pointer
 }
 
@@ -540,7 +540,7 @@ fn (re RE) get_char_class(pc int) string {
 	return tos_clone( buf_ptr )
 }
 
-fn (re RE) check_char_class(pc int, ch u32) bool {
+fn (re RE) check_char_class(pc int, ch rune) bool {
 	mut cc_i := re.prog[pc].cc_index
 	for cc_i >= 0 && cc_i < re.cc.len && re.cc[cc_i].cc_type != cc_end {
 		if re.cc[cc_i].cc_type == cc_bsls {
@@ -557,7 +557,7 @@ fn (re RE) check_char_class(pc int, ch u32) bool {
 }
 
 // parse_char_class return (index, str_len, cc_type) of a char class [abcm-p], char class start after the [ char
-fn (mut re RE) parse_char_class(in_txt string, in_i int) (int, int, u32) {
+fn (mut re RE) parse_char_class(in_txt string, in_i int) (int, int, rune) {
 	mut status := CharClass_parse_state.start
 	mut i := in_i
 
@@ -915,7 +915,7 @@ fn (re RE) parse_groups(in_txt string, in_i int) (int, bool, string, int) {
 [deprecated]
 pub fn (mut re RE) compile(in_txt string) (int,int) {
 	return re.impl_compile(in_txt)
-}    
+}
 
 fn (mut re RE) impl_compile(in_txt string) (int,int) {
 	mut i        := 0      // input string index
@@ -1493,14 +1493,14 @@ pub fn (mut re RE) match_base(in_txt byteptr, in_txt_len int ) (int,int) {
 	mut first_match := -1             //index of the first match
 
 	mut i := 0                       // source string index
-	mut ch := u32(0)                 // examinated char
+	mut ch := rune(0)                 // examinated char
 	mut char_len := 0                // utf8 examinated char len
 	mut m_state := Match_state.start // start point for the matcher FSM
 
 	mut pc := -1                     // program counter
 	mut state := StateObj{}          // actual state
-	mut ist := u32(0)                // actual instruction
-	mut l_ist := u32(0)              // last matched instruction
+	mut ist := rune(0)                // actual instruction
+	mut l_ist :=rune(0)              // last matched instruction
 
 	mut group_stack      := [-1].repeat(re.group_max)
 	mut group_data       := [-1].repeat(re.group_max)
@@ -2213,7 +2213,7 @@ pub fn new_regex() RE {
 [deprecated]
 pub fn new_regex_by_size(mult int) RE {
 	return impl_new_regex_by_size(mult)
-}    
+}
 fn impl_new_regex_by_size(mult int) RE {
 	mut re := RE{}
 	re.prog = [Token{}].repeat(max_code_len*mult)       // max program length, default 256 istructions
diff --git a/vlib/strconv/atof.v b/vlib/strconv/atof.v
index 34619b6d9e..e3b28634a0 100644
--- a/vlib/strconv/atof.v
+++ b/vlib/strconv/atof.v
@@ -180,7 +180,7 @@ NOTE: #TOFIX need one char after the last char of the number
 fn parser(s string) (int,PrepNumber) {
 	mut state := fsm_a
 	mut digx := 0
-	mut c := ` ` // initial value for kicking off the state machine
+	mut c := byte(` `) // initial value for kicking off the state machine
 	mut result := parser_ok
 	mut expneg := false
 	mut expexp := 0
@@ -192,7 +192,8 @@ fn parser(s string) (int,PrepNumber) {
 			// skip starting spaces
 			fsm_a {
 				if is_space(c) == true {
-					c = s[i++]
+					c = s[i]
+					i++
 				}
 				else {
 					state = fsm_b
@@ -202,12 +203,13 @@ fn parser(s string) (int,PrepNumber) {
 			fsm_b {
 				state = fsm_c
 				if c == c_plus {
-					c = s[i++]
-					//i++
+					c = s[i]
+					i++
 				}
 				else if c == c_minus {
 					pn.negative = true
-					c = s[i++]
+					c = s[i]
+					i++
 				}
 				else if is_digit(c) {
 				}
diff --git a/vlib/strconv/format.v b/vlib/strconv/format.v
index 927b957d13..910c7ac435 100644
--- a/vlib/strconv/format.v
+++ b/vlib/strconv/format.v
@@ -203,7 +203,7 @@ pub fn f64_to_str_lnd(f f64, dec_digit int) string {
 
 */
 pub struct BF_param {
-	pad_ch       byte       = ` `     // padding char
+	pad_ch       byte       = byte(` `)     // padding char
 	len0         int        = -1      // default len for whole the number or string
 	len1         int        = 6       // number of decimal digits, if needed
 	positive     bool       = true    // mandatory: the sign of the number passed
@@ -438,7 +438,7 @@ pub fn v_sprintf(str string, pt ... voidptr) string{
 	mut len0         := -1               // forced length, if -1 free length
 	mut len1         := -1               // decimal part for floats
 	def_len1         := 6                // default value for len1
-	mut pad_ch       := ` `              // pad char
+	mut pad_ch       := byte(` `)              // pad char
 	mut th_separator := false            // thousands separator flag
 
 	// prefix chars for Length field
diff --git a/vlib/strings/builder.v b/vlib/strings/builder.v
index c34543c1f2..57c683a816 100644
--- a/vlib/strings/builder.v
+++ b/vlib/strings/builder.v
@@ -52,7 +52,7 @@ pub fn (mut b Builder) go_back(n int) {
 
 fn bytes2string(b []byte) string {
 	mut copy := b.clone()
-	copy << `\0`
+	copy << byte(`\0`)
 	res := tos(copy.data, copy.len-1)
 	return res
 }
diff --git a/vlib/v/checker/check_types.v b/vlib/v/checker/check_types.v
index 978d5bfc01..dcae17c3fd 100644
--- a/vlib/v/checker/check_types.v
+++ b/vlib/v/checker/check_types.v
@@ -257,6 +257,11 @@ pub fn (mut c Checker) check_types(got, expected table.Type) bool {
 		return false
 	}
 	if got.is_number() && expected.is_number() {
+		if got == table.rune_type && expected == table.byte_type {
+			return true
+		} else if expected == table.rune_type && got == table.byte_type {
+			return true
+		}
 		if c.promote_num(expected, got) != expected {
 			// println('could not promote ${c.table.get_type_symbol(got).name} to ${c.table.get_type_symbol(expected).name}')
 			return false
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index c97f29e3cd..40330893af 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -1,6 +1,5 @@
 // Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
-// Use of this source code is governed by an MIT license
-// that can be found in the LICENSE file.
+// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
 module checker
 
 import v.ast
@@ -260,7 +259,7 @@ pub fn (mut c Checker) type_decl(node ast.TypeDecl) {
 	match node {
 		ast.AliasTypeDecl {
 			// TODO Replace `c.file.mod.name != 'time'` by `it.language != .v` once available
-			if c.file.mod.name != 'time' {
+			if c.file.mod.name != 'time' && c.file.mod.name != 'builtin' {
 				c.check_valid_pascal_case(node.name, 'type alias', node.pos)
 			}
 			typ_sym := c.table.get_type_symbol(node.parent_type)
@@ -513,8 +512,10 @@ pub fn (mut c Checker) infix_expr(mut infix_expr ast.InfixExpr) table.Type {
 		.key_in, .not_in {
 			match right.kind {
 				.array {
+					elem_type := right.array_info().elem_type
 					right_sym := c.table.get_type_symbol(c.table.mktyp(right.array_info().elem_type))
-					if left_default.kind != right_sym.kind {
+					// if left_default.kind != right_sym.kind {
+					if !c.check_types(left_type, elem_type) {
 						c.error('the data type on the left of `$infix_expr.op.str()` (`$left.name`) does not match the array item type (`$right_sym.source_name`)',
 							infix_expr.pos)
 					}
@@ -2379,7 +2380,10 @@ pub fn (mut c Checker) expr(node ast.Expr) table.Type {
 			return c.chan_init(mut node)
 		}
 		ast.CharLiteral {
-			return table.byte_type
+			// return any_int, not rune, so that we can do "bytes << `A`" without a cast etc
+			// return table.any_int_type
+			return table.rune_type
+			// return table.byte_type
 		}
 		ast.Comment {
 			return table.void_type
@@ -3032,7 +3036,9 @@ pub fn (mut c Checker) if_expr(mut node ast.IfExpr) table.Type {
 				mut last_expr := branch.stmts[branch.stmts.len - 1] as ast.ExprStmt
 				c.expected_type = former_expected_type
 				last_expr.typ = c.expr(last_expr.expr)
-				if last_expr.typ != node.typ {
+				// if last_expr.typ != node.typ {
+				// if !c.check_types(node.typ, last_expr.typ) {
+				if !c.check_types(last_expr.typ, node.typ) {
 					if node.typ == table.void_type {
 						// first branch of if expression
 						node.is_expr = true
diff --git a/vlib/v/table/atypes.v b/vlib/v/table/atypes.v
index 86202ae323..2791ec7169 100644
--- a/vlib/v/table/atypes.v
+++ b/vlib/v/table/atypes.v
@@ -259,16 +259,20 @@ pub const (
 	// t_type_idx       = 23
 	any_flt_type_idx = 24
 	any_int_type_idx = 25
+	sizet_type_idx   = 26
+	rune_type_idx    = 27
 )
 
 pub const (
 	integer_type_idxs          = [i8_type_idx, i16_type_idx, int_type_idx, i64_type_idx, byte_type_idx,
-		u16_type_idx, u32_type_idx, u64_type_idx, any_int_type_idx]
+		u16_type_idx, u32_type_idx, u64_type_idx, any_int_type_idx, rune_type_idx]
 	signed_integer_type_idxs   = [i8_type_idx, i16_type_idx, int_type_idx, i64_type_idx]
 	unsigned_integer_type_idxs = [byte_type_idx, u16_type_idx, u32_type_idx, u64_type_idx]
 	float_type_idxs            = [f32_type_idx, f64_type_idx, any_flt_type_idx]
 	number_type_idxs           = [i8_type_idx, i16_type_idx, int_type_idx, i64_type_idx, byte_type_idx,
-		u16_type_idx, u32_type_idx, u64_type_idx, f32_type_idx, f64_type_idx, any_int_type_idx, any_flt_type_idx]
+		u16_type_idx, u32_type_idx, u64_type_idx, f32_type_idx, f64_type_idx, any_int_type_idx, any_flt_type_idx,
+		rune_type_idx,
+	]
 	pointer_type_idxs          = [voidptr_type_idx, byteptr_type_idx, charptr_type_idx]
 	string_type_idxs           = [string_type_idx, ustring_type_idx]
 )
@@ -300,6 +304,7 @@ pub const (
 	// t_type       = new_type(t_type_idx)
 	any_flt_type = new_type(any_flt_type_idx)
 	any_int_type = new_type(any_int_type_idx)
+	rune_type    = new_type(rune_type_idx)
 )
 
 pub const (