Some reformatting.

src/flatty.nim

@@ -1,9 +1,12 @@
 ## Convert any Nim objects, numbers, strings, refs to and from binary format.
+import 
+  std/[tables, typetraits, sets],
+  flatty/objvar
+
 when defined(js):
   import flatty/jsbinny
 else:
   import flatty/binny
-import flatty/objvar, tables, typetraits, sets, sequtils
 
 type SomeTable*[K, V] = Table[K, V] | OrderedTable[K, V]
 type SomeSet[A] = set[A] | HashSet[A] | OrderedSet[A]
@@ -43,7 +46,7 @@ proc toFlatty*(s: var string, x: char) =
 proc fromFlatty*(s: string, i: var int, x: var char) =
   x = s.readUint8(i).char
   i += 1
-
+  
 # Numbers
 proc toFlatty*(s: var string, x: uint8) = s.addUint8(x)
 proc toFlatty*(s: var string, x: int8) = s.addInt8(x)

src/flatty/binlisting.nim

@@ -1,8 +1,8 @@
 ## Takes bin-listing in ASCII format and turns them into real binary.
-import parseutils, strutils
+import std/[parseutils, strutils]
 
 proc decodeBinListing*(text: string): string =
-
+  ## Takes bin-listing in ASCII format and turns them into real binary.
   for line in text.split("\n"):
     let line = line.strip()
     if line == "": continue

src/flatty/encode.nim

@@ -1,4 +1,4 @@
-import unicode
+import std/unicode
 
 proc maybeSwap(u: uint16, swap: bool): uint16 =
   ## Swaps from big endian to little endian if swap is true.

src/flatty/hashy.nim

@@ -1,6 +1,8 @@
 ## Hash functions based on flatty, hash any nested object.
 
-import flatty, hashes
+import 
+  std/hashes,
+  flatty
 
 export Hash
 

src/flatty/hashy2.nim

@@ -1,6 +1,8 @@
 ## Hash functions based on flatty, hash any nested object.
 
-import flatty/objvar, typetraits
+import 
+  std/typetraits,
+  flatty/objvar
 
 {.push overflowChecks: off.}
 

src/flatty/hexprint.nim

@@ -1,7 +1,6 @@
-import strutils
+import std/strutils
 
 when defined(js):
-
   proc hexPrint*(buf: string): string =
     ## Prints a string in hex format of the old DOS debug program.
     ## Useful for looking at binary dumps.
@@ -41,7 +40,6 @@ when defined(js):
       result.add("\n")
 
 else:
-
   proc hexPrint*(p: ptr uint8, len: int, startAddress = 0): string =
     ## Prints a string in hex format of the old DOS debug program.
     ## Useful for looking at binary dumps.

src/flatty/objvar.nim

@@ -1,4 +1,4 @@
-import macros
+import std/macros
 
 proc hasKind(node: NimNode, kind: NimNodeKind): bool =
   for c in node.children:

tests/test_flatty.nim

@@ -1,4 +1,6 @@
-import flatty, intsets, json, tables, sets, flatty/hexprint
+import 
+  std/[intsets, json, tables, sets],
+  flatty
 
 # Test booleans.
 doAssert true.toFlatty.fromFlatty(bool) == true