parser: strip trailing space on the line after `-%}` even if the spac…

…e doesn't end with `\n`

Add `{%-` and `-%}` for removing leading and trailing spaces

parser: add missing `{%dl= int64 %}`

Add `{%dl int64 %}` for int64

Always use forward slashes in file paths on `//line ` comments

Fix valyala#51

Extracted parser

Fixed a typo bug in v1.0.1

Improved performance for {%f int %}

Initial tag for go module