add double type for column.c
(cherry picked from commit 4aaa1fe5ed38764bdb9fa4472e9c94470933d8a5)
Support for UTF8 characters in jsmin [ci skip]
(cherry picked from commit 35b0113d155f29e21803ebcf8d63a512fb5c21d4)
Do not restore someone else's frame in listenLowSeverity()
(cherry picked from commit f2f83cba394211f948287b034c3c92e4a7c44141)
Fix #1099
(cherry picked from commit eb4f35659048e54ccf3e82b92791a0c01b1ccd57)
Fix #1091
(cherry picked from commit 5e6f676cc968aabf88dab20bbaa56e1a38461789)
Implemented Phalcon\Cache\Backend\Memory::queryKeys()
(cherry picked from commit c46c766ba11d048be703fa7e43f81aa71623df06)
Documentation bug fixes

Cherry picked from commits:
  * 97bcf2584c56e79c6fbe6323a263a3997f5596c6
  * 93d0801668786b705bbdc677958fec8090cd66db
  * 1aaf53377d048979da089bcdd3e69ce86124c8be
  * 226a7dc9783a10a6e257060e140fa98087125340
  * abcf5bb9b5be7082b35ab97bd6f7e4a4b9a56b1c
Fix memory leak
(cherry picked from commit 728ca3d076bf11b28f7c41246447ef738cdfbfeb)

Conflicts:
	ext/mvc/view/engine/volt/compiler.c
Regression tests

Cherry picked from:
  * afccd04c59ef39d1c5800d21da2d97d83e62588f
  * 4501a55917ff25dfe5611e7b7cbdaebee1313a3f
  * fdb17265d765be18f081d7de46e1c66bf9925112
  * 9630ccf69196b74af6cce84e0bdc395e8912300f
  * 850f3c13fdb1023c25fb22f35941a0de26cbc4b7
Fix #1198
(cherry picked from commit ef07b7ecb120400fae9446183c355779030a1d09)
Implement #1175 + Unit Test
(cherry picked from commits 961c658c143ed1b98d2363108ff3eb70a9963a6e, 2becb185578626e49b749af55e9ea96580762ebd)
Fix #1024
(cherry picked from commit 6a97f4a6c608a681b5e7135b76ef8dc3c2f814c0)

Conflicts:
	ext/config.c
Fix bug #947
(cherry picked from commit c3166d9f3a483cd54afda0e0a1fe9ee2b28dba09)
Fix #1040 + tests

Cherry picked from commits:
  * cda9f28e76521eed618300f5cdf6399a09b00b8e
  * f270a9673c4f64d2ecf5ae8aa31a66269180b643
  * d43feb268b65dbae5067ffc208b63b9750489c5a
  * 983857ede086e70c1597fdf021cf1643d769a18c
Regenerated build/ [ci skip]
Updated CHANGELOG [ci skip]
1.2.4 RC1
Regenerated build/ [ci skip]
Merge pull request #1252 from sjinks/1.2.3.1

1.2.4 RC1
Regenerating build, updating versions [ci skip]