Add a macro `enumLen` which is used to determine the number of items in
an enumeration type to the `typetraits.nim` module. Also, add unit tests
for it in the `ttypetraits.nim` module.
Related to nimlang/Nim#15824
* nimgrep: speed up by threads and Channels
* nimgrep: add --bin, --text, --count options
* nimgrep: add --sortTime option
* allow Peg in all matches
including --includeFile, --excludeFile, --excludeDir
* add --match and --noMatch options
* add --includeDir option
* add --limit (-m) and --onlyAscii (-o) options
* fix performance regression
introduced in nimgrep improvements #12779
* better error handling
* add option --fit
* fix groups in --replace
* fix flushing, --replace, improve --count
* use "." as the default directory, not full path
* fix --fit for Windows
* force target to C for macosx
* validate non-negative int input for options #15318
* switch nimgrep to using --gc:orc
* address review: implement cropping in matches,...
* implement stdin/pipe & revise --help
* address stylistic review & add limitations
Make `requiresInit` pragma to work for distinct types in addition to
objects. Tagging of distinct types with `requiresInit` pragma was
already supported, but its impact wasn't applied. Now its behavior when
applied on distinct types is as follows.
Given the following distinct type definitions:
```nim
type
DistinctObject {.requiresInit, borrow: `.`.} = distinct MyObject
DistinctString {.requiresInit.} = distinct string
```
The following code blocks will fail to compile:
```nim
var foo: DistinctFoo
foo.x = "test"
doAssert foo.x == "test"
```
```nim
var s: DistinctString
s = "test"
doAssert s == "test"
```
But these ones will compile successfully:
```nim
let foo = DistinctFoo(Foo(x: "test"))
doAssert foo.x == "test"
```
```nim
let s = "test"
doAssert s == "test"
```
* add parseEnumRange
* fix runnable example
* update changelog
* use parseEnumRange in compiler
* reorganise code
* add changelog, make single normalizer argument
* Fixed not handling blob correctly in sqlite
* Fixed setLen commented by mistake
* Added binary example as db_sqlite doc
* Added tests for sqlite binary data
