Pass caching parameter to PDFResourceManager in `high_level` functions (#475)

* Updated high_level.py

This commit enables caching to be turned on and off rather than be always on regardless of the user input.

* Reverted params back to fix errors

* Updated CHANGELOG.md to reflect quick fix

* Update CHANGELOG.md

Co-authored-by: Pieter Marsman <pietermarsman@gmail.com>

CHANGELOG.md

@@ -5,8 +5,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
-### Removed
+### Fixed
+- Pass caching parameter to PDFResourceManager in `high_level` functions ([#475](https://github.com/pdfminer/pdfminer.six/pull/475))
 
+### Removed
 - Remove unused rijndael encryption implementation ([#465](https://github.com/pdfminer/pdfminer.six/pull/465))
 
 ## [20200726]

pdfminer/high_level.py

@@ -106,7 +106,7 @@ def extract_text(pdf_file, password='', page_numbers=None, maxpages=0,
         laparams = LAParams()
 
     with open_filename(pdf_file, "rb") as fp, StringIO() as output_string:
-        rsrcmgr = PDFResourceManager()
+        rsrcmgr = PDFResourceManager(caching=caching)
         device = TextConverter(rsrcmgr, output_string, codec=codec,
                                laparams=laparams)
         interpreter = PDFPageInterpreter(rsrcmgr, device)
@@ -141,7 +141,7 @@ def extract_pages(pdf_file, password='', page_numbers=None, maxpages=0,
         laparams = LAParams()
 
     with open_filename(pdf_file, "rb") as fp:
-        resource_manager = PDFResourceManager()
+        resource_manager = PDFResourceManager(caching=caching)
         device = PDFPageAggregator(resource_manager, laparams=laparams)
         interpreter = PDFPageInterpreter(resource_manager, device)
         for page in PDFPage.get_pages(fp, page_numbers, maxpages=maxpages,